United States Department of the Navy
United StaActive Patents
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Total Holdings
609
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US6746510B2 | Processing of nanocrystalline metallic powders and coatings… | Expired / Lapsed | 2002-03-29 | 2004-06-08 | 17 | Details |
| US6703917B2 | Resettable fuse/circuit interrupter with visual fault indic… | Expired / Lapsed | 2001-10-10 | 2004-03-09 | 13 | Details |
| US6559867B1 | Configuration system for networked training modules and ass… | Expired / Lapsed | 1999-11-24 | 2003-05-06 | 2 | Details |
| US6531979B1 | Adaptive time-compression stabilizer | Expired / Lapsed | 1970-02-10 | 2003-03-11 | 19 | Details |
| US6426952B1 | Multi-interface point-to-point switching system (MIPPSS) ha… | Expired / Lapsed | 1998-09-18 | 2002-07-30 | 45 | Details |
| US6266704B1 | Onion routing network for securely moving data through comm… | Expired / Lapsed | 1998-05-29 | 2001-07-24 | 24 | Details |
| US6219792B1 | Secured network system | Expired / Lapsed | 1998-08-28 | 2001-04-17 | 12 | Details |
| USH1916H | Hostile weapon locator system | Expired / Lapsed | 1997-06-27 | 2000-11-07 | 8 | Details |
| US5985173A | Phosphors having a semiconductor host surrounded by a shell | Expired / Lapsed | 1997-11-18 | 1999-11-16 | 20 | Details |
| US5721131A | Surface modification of polymers with self-assembled monola… | Expired / Lapsed | 1994-04-28 | 1998-02-24 | 25 | Details |
| US5417597A | Vessel with machinery modules outside watertight hull | Expired / Lapsed | 1994-04-28 | 1995-05-23 | 25 | Details |
| US5384895A | Self-organizing neural network for classifying pattern sign… | Expired / Lapsed | 1992-08-28 | 1995-01-24 | 17 | Details |
| US5325862A | Method and/or system for personal identification and impair… | Expired / Lapsed | 1993-03-26 | 1994-07-05 | 79 | Details |
| US5307271A | Reflexive teleoperated control system for a remotely contro… | Expired / Lapsed | 1990-09-28 | 1994-04-26 | 9 | Details |
| US5296155A | Stratified carrier electroviscous fluids and apparatus | Expired / Lapsed | 1992-01-24 | 1994-03-22 | 12 | Details |
| US5270252A | Method of forming platinum and platinum silicide schottky c… | Expired / Lapsed | 1992-07-28 | 1993-12-14 | 12 | Details |
| US5268920A | System for end-pumping a solid state laser using a large ap… | Expired / Lapsed | 1991-11-06 | 1993-12-07 | 29 | Details |
| US5206867A | Suppression of relaxation oscillations in flashpumped, two-… | Expired / Lapsed | 1992-01-31 | 1993-04-27 | 36 | Details |
| US5169676A | Control of crystallite size in diamond film chemical vapor … | Expired / Lapsed | 1991-05-16 | 1992-12-08 | 14 | Details |
| USH1057H | Conductive hose | Expired / Lapsed | 1990-05-31 | 1992-05-05 | 10 | Details |
| US5111401A | Navigational control system for an autonomous vehicle | Expired / Lapsed | 1990-05-19 | 1992-05-05 | 26 | Details |
| US5095312A | Impulse transmitter and quantum detection radar system | Expired / Lapsed | 1991-04-12 | 1992-03-10 | 9 | Details |
| US5086432A | Resonantly pumped, erbium-doped, 2.8 micron solid state las… | Expired / Lapsed | 1991-05-23 | 1992-02-04 | 23 | Details |
| US5084880A | Erbium-doped fluorozirconate fiber laser pumped by a diode … | Expired / Lapsed | 1990-07-02 | 1992-01-28 | 37 | Details |
| US5050183A | Figure eight shaped coherent optical pulse source | Expired / Lapsed | 1990-11-05 | 1991-09-17 | 25 | Details |
| US5014279A | Laser diode pumped, erbium-doped, solid state laser with hi… | Expired / Lapsed | 1989-10-31 | 1991-05-07 | 33 | Details |
| US5003547A | Room-temperature, flashpumped, 1.96 micron solid state laser | Expired / Lapsed | 1989-12-29 | 1991-03-26 | 22 | Details |
| US4969150A | Tunable, continuous wave, thulium-doped, solid state laser | Expired / Lapsed | 1990-03-30 | 1990-11-06 | 25 | Details |
| US4967416A | Thulium-doped fluorozirconate fiber laser pumped by a diode… | Expired / Lapsed | 1990-02-28 | 1990-10-30 | 38 | Details |
| US4965803A | Room-temperature, laser diode-pumped, q-switched, 2 micron,… | Expired / Lapsed | 1990-03-30 | 1990-10-23 | 22 | Details |
| US4932880A | Low-cost sound related trainer | Expired / Lapsed | 1989-04-07 | 1990-06-12 | 10 | Details |
| US4881080A | Apparatus for and a method of determining compass headings | Expired / Lapsed | 1985-06-24 | 1989-11-14 | 11 | Details |
| US4853771A | Robotic vision system | Expired / Lapsed | 1988-04-08 | 1989-08-01 | 35 | Details |
| US4776991A | Scaled-up production of liposome-encapsulated hemoglobin | Expired / Lapsed | 1986-08-29 | 1988-10-11 | 6 | Details |
| US4718406A | Fiber optics image scope (micro-endoscope), ureteroscope | Expired / Lapsed | 1982-06-28 | 1988-01-12 | 4 | Details |
| US4710472A | Magnetic separation device | Expired / Lapsed | 1985-09-25 | 1987-12-01 | 28 | Details |
| US4702575A | Helmet mounted eye tracker using a position sensing detector | Expired / Lapsed | 1981-05-11 | 1987-10-27 | 7 | Details |
| US4660164A | Multiplexed digital correlator | Expired / Lapsed | 1983-12-05 | 1987-04-21 | 8 | Details |
| US4639399A | Nickel oxide, ceramic insulated, high temperature coating | Expired / Lapsed | 1985-11-26 | 1987-01-27 | 19 | Details |
| US4635182A | Apparatus for controlling multiple time-varying processes | Expired / Lapsed | 1984-07-03 | 1987-01-06 | 6 | Details |
| US4633170A | Bragg cell spectrum analyzer | Expired / Lapsed | 1984-06-05 | 1986-12-30 | 10 | Details |
| US4633503A | Video zoom processor | Expired / Lapsed | 1984-03-19 | 1986-12-30 | 4 | Details |
| US4612666A | Automatic pattern recognition apparatus | Expired / Lapsed | 1984-07-05 | 1986-09-16 | 10 | Details |
| US4593637A | Combination frangible nose cap EMI shield | Expired / Lapsed | 1984-06-04 | 1986-06-10 | 7 | Details |
| US4568396A | Wear improvement in titanium alloys by ion implantation | Expired / Lapsed | 1984-10-03 | 1986-02-04 | 10 | Details |
| USH14H | Adaptive doppler filter banks | Expired / Lapsed | 1985-08-19 | 1986-01-07 | 15 | Details |
| US4555703A | Environmental mapping system | Expired / Lapsed | 1980-06-19 | 1985-11-26 | 18 | Details |
| US4550601A | Method for determining the magnitude of earth's gravity | Expired / Lapsed | 1984-02-27 | 1985-11-05 | 16 | Details |
| US4533408A | Preparation of hard magnetic alloys of a transition metal a… | Expired / Lapsed | 1983-09-06 | 1985-08-06 | 21 | Details |
| US4531920A | Transverse waterjet propulsion with auxiliary inlets and im… | Expired / Lapsed | 1983-07-22 | 1985-07-30 | 8 | Details |
| US4518632A | Metallized synthetic cable | Expired / Lapsed | 1984-04-18 | 1985-05-21 | 11 | Details |
| US4509522A | Infrared optical measurement of blood gas concentrations an… | Expired / Lapsed | 1981-12-15 | 1985-04-09 | 12 | Details |
| US4508055A | Device for cryogenically fabricating source material for pl… | Expired / Lapsed | 1983-06-03 | 1985-04-02 | 15 | Details |
| US4499584A | Data validation monitor | Expired / Lapsed | 1983-05-26 | 1985-02-12 | 18 | Details |
| US4480324A | Constant beamwidth frequency independent acoustic antenna | Expired / Lapsed | 1983-04-11 | 1984-10-30 | 9 | Details |
| US4476549A | Calibration method for acoustic scattering measurements usi… | Expired / Lapsed | 1982-03-31 | 1984-10-09 | 7 | Details |
| US4472719A | ECM Multiple-target retrodirective antenna | Expired / Lapsed | 1973-01-15 | 1984-09-18 | 6 | Details |
| US4469399A | Method of making an undersea, high pressure bulkhead penetr… | Expired / Lapsed | 1981-12-30 | 1984-09-04 | 8 | Details |
| US4461750A | Infrared window materials and their fabrication | Expired / Lapsed | 1982-08-23 | 1984-07-24 | 14 | Details |
| US4452533A | External cavity diode laser sensor | Expired / Lapsed | 1981-07-22 | 1984-06-05 | 17 | Details |
| US4447117A | Gated fiber optic transmission | Expired / Lapsed | 1982-07-06 | 1984-05-08 | 11 | Details |
| US4445207A | Frequency independent acoustic antenna | Expired / Lapsed | 1977-04-04 | 1984-04-24 | 29 | Details |
| US4442350A | Fiber optic sensor with enhanced immunity to random environ… | Expired / Lapsed | 1981-08-17 | 1984-04-10 | 20 | Details |
| US4433291A | Optical fiber for magnetostrictive responsive detection of … | Expired / Lapsed | 1981-01-09 | 1984-02-21 | 27 | Details |
| US4414624A | Multiple-microcomputer processing | Expired / Lapsed | 1980-11-19 | 1983-11-08 | 13 | Details |
| US4408882A | Optical gyroscope with time dependent wavelength | Expired / Lapsed | 1981-07-02 | 1983-10-11 | 13 | Details |
| US4409608A | Recessed interdigitated integrated capacitor | Expired / Lapsed | 1981-04-28 | 1983-10-11 | 4 | Details |
| US4408329A | Laser device with intraresonator harmonic generator | Expired / Lapsed | 1978-12-04 | 1983-10-04 | 15 | Details |
| US4403218A | Portable instrumentation telemetry device | Expired / Lapsed | 1981-08-19 | 1983-09-06 | 8 | Details |
| US4399322A | Low loss buoyant coaxial cable | Expired / Lapsed | 1982-02-01 | 1983-08-16 | 10 | Details |
| US4391515A | Optical transmitter/receiver apparatus sharing common optics | Expired / Lapsed | 1981-05-07 | 1983-07-05 | 2 | Details |
| US4383736A | Pressure formed fiber optic connector | Expired / Lapsed | 1980-11-24 | 1983-05-17 | 6 | Details |
| US4380931A | Apparatus and method for quantitative nondestructive wire t… | Expired / Lapsed | 1981-04-23 | 1983-04-26 | 14 | Details |
| US4378497A | Optical fiber magnetic field sensor with thermal and acoust… | Expired / Lapsed | 1981-03-06 | 1983-03-29 | 20 | Details |
| US4376248A | Fiber optical magnetic field sensor using magnetostrictive … | Expired / Lapsed | 1981-03-06 | 1983-03-08 | 20 | Details |
| US4375334A | Nephelometer | Expired / Lapsed | 1981-06-18 | 1983-03-01 | 6 | Details |
| US4374186A | Polymer packaged cell in a sack | Expired / Lapsed | 1981-04-29 | 1983-02-15 | 17 | Details |
| US4372642A | Multiple thin film absorption of reflected substrate modes … | Expired / Lapsed | 1980-11-25 | 1983-02-08 | 23 | Details |
| US4363114A | Low noise remote optical fiber sound detector | Expired / Lapsed | 1981-01-21 | 1982-12-07 | 25 | Details |
| US4352292A | Instrument for measuring dynamic viscoelastic properties | Expired / Lapsed | 1980-07-28 | 1982-10-05 | 21 | Details |
| US4348074A | Application of ion implantation to LiNbO3 integrated, optic… | Expired / Lapsed | 1980-03-03 | 1982-09-07 | 17 | Details |
| US4348185A | Wide angle infinity display system | Expired / Lapsed | 1980-02-14 | 1982-09-07 | 11 | Details |
| US4347580A | Array convolver/correlator | Expired / Lapsed | 1980-07-21 | 1982-08-31 | 14 | Details |
| US4347485A | Excimer-pumped blue-green laser | Expired / Lapsed | 1979-05-23 | 1982-08-31 | 11 | Details |
| US4337111A | Method of obtaining strong and durable adhesion to rubber t… | Expired / Lapsed | 1978-10-02 | 1982-06-29 | 9 | Details |
| US4335433A | Method for correcting navigation errors due to water curren… | Expired / Lapsed | 1980-06-16 | 1982-06-15 | 8 | Details |
| US4334229A | Leaky waveguide continuous slot antenna | Expired / Lapsed | 1968-11-12 | 1982-06-08 | 5 | Details |
| US4332018A | Wide band mosaic lens antenna array | Expired / Lapsed | 1980-02-01 | 1982-05-25 | 11 | Details |
| US4330593A | PZT/Polymer composites and their fabrication | Expired / Lapsed | 1980-11-13 | 1982-05-18 | 8 | Details |
| US4330763A | Resonantly pumped mid-ir laser | Expired / Lapsed | 1980-03-19 | 1982-05-18 | 8 | Details |
| US4330238A | Automatic actuator for variable speed pump | Expired / Lapsed | 1980-03-04 | 1982-05-18 | 14 | Details |
| US4328554A | Programmable frequency synthesizer (PFS) | Expired / Lapsed | 1980-07-03 | 1982-05-04 | 17 | Details |
| US4325181A | Simplified fabrication method for high-performance FET | Expired / Lapsed | 1980-12-17 | 1982-04-20 | 9 | Details |
| US4309773A | Apparatus and method for radio channel selection | Expired / Lapsed | 1980-04-18 | 1982-01-05 | 18 | Details |
| US4297887A | High-sensitivity, low-noise, remote optical fiber | Expired / Lapsed | 1980-02-19 | 1981-11-03 | 12 | Details |
| US4286328A | Incoherent optical ambiguity function generator | Expired / Lapsed | 1978-10-06 | 1981-08-25 | 16 | Details |
| US4284747A | Cis-trans fluoropolyol polyacrylate | Expired / Lapsed | 1980-02-25 | 1981-08-18 | 12 | Details |
| US4283768A | Signal generator | Expired / Lapsed | 1979-04-30 | 1981-08-11 | 8 | Details |
| US4279469A | Separable fiber optic cable connector | Expired / Lapsed | 1977-10-03 | 1981-07-21 | 17 | Details |
| US4278710A | Apparatus and method for submicron pattern generation | Expired / Lapsed | 1979-08-27 | 1981-07-14 | 12 | Details |
| US4277167A | Depth mapping system | Expired / Lapsed | 1976-08-25 | 1981-07-07 | 9 | Details |
| US4266850A | Integrated bias for waveguide amplitude modulator | Expired / Lapsed | 1980-01-28 | 1981-05-12 | 5 | Details |
| US4264362A | Supercorroding galvanic cell alloys for generation of heat … | Expired / Lapsed | 1979-08-13 | 1981-04-28 | 21 | Details |
| US4259009A | Far field target designators | Expired / Lapsed | 1979-07-30 | 1981-03-31 | 16 | Details |
| US4249257A | Radio frequency signals analyzer | Expired / Lapsed | 1977-09-01 | 1981-02-03 | 13 | Details |
| US4243300A | Large aperture phased element modulator/antenna | Expired / Lapsed | 1978-12-19 | 1981-01-06 | 10 | Details |
| US4240441A | Carotid thermodilution catheter | Expired / Lapsed | 1978-10-10 | 1980-12-23 | 9 | Details |
| US4236867A | Friction reducing arrangement for hydraulic machines | Expired / Lapsed | 1979-07-27 | 1980-12-02 | 14 | Details |
| US4236546A | Electronic breathing mixture control | Expired / Lapsed | 1978-10-23 | 1980-12-02 | 9 | Details |
| US4232313A | Tactical nagivation and communication system | Expired / Lapsed | 1972-09-22 | 1980-11-04 | 21 | Details |
| US4229832A | Diver's suit excess gas exhaust valve | Expired / Lapsed | 1979-05-21 | 1980-10-28 | 14 | Details |
| US4227111A | Flexible piezoelectric composite transducers | Expired / Lapsed | 1979-03-28 | 1980-10-07 | 20 | Details |
| US4217910A | Internal jugular and left ventricular thermodilution cathet… | Expired / Lapsed | 1978-10-10 | 1980-08-19 | 12 | Details |
| US4217581A | High range resolution radar rate aided range tracker | Expired / Lapsed | 1978-09-22 | 1980-08-12 | 9 | Details |
| US4204143A | Pulse width modulated power amplifier for direct current mo… | Expired / Lapsed | 1978-09-26 | 1980-05-20 | 4 | Details |
| US4195221A | Scanning focused local oscillator optical heterodyne imagin… | Expired / Lapsed | 1978-07-03 | 1980-03-25 | 17 | Details |
| US4193130A | Fiber optic hydrophone for use as an underwater electroacou… | Expired / Lapsed | 1978-09-07 | 1980-03-11 | 8 | Details |
| US4193088A | Optical heterodyne system for imaging in a dynamic diffusiv… | Expired / Lapsed | 1978-08-02 | 1980-03-11 | 12 | Details |
| US4188710A | Ohmic contacts for group III-V n-type semiconductors using … | Expired / Lapsed | 1978-08-11 | 1980-02-19 | 15 | Details |
| US4187488A | Reverberation backscatter measurement system | Expired / Lapsed | 1978-03-20 | 1980-02-05 | 10 | Details |
| US4174524A | Ultra high speed gated pulse optical imaging system | Expired / Lapsed | 1978-09-25 | 1979-11-13 | 16 | Details |
| US4174177A | False target warning system | Expired / Lapsed | 1978-08-14 | 1979-11-13 | 9 | Details |
| US4170904A | Single-axis disturbance compensation system | Expired / Lapsed | 1977-12-12 | 1979-10-16 | 11 | Details |
| US4168482A | Combination acoustic filter plate and liquid lens | Expired / Lapsed | 1978-07-14 | 1979-09-18 | 15 | Details |
| US4166229A | Piezoelectric polymer membrane stress gage | Expired / Lapsed | 1978-02-23 | 1979-08-28 | 7 | Details |
| US4162397A | Fiber optic acoustic sensor | Expired / Lapsed | 1978-06-28 | 1979-07-24 | 11 | Details |
| US4155065A | Optic scattering acoustic transducer | Expired / Lapsed | 1977-09-12 | 1979-05-15 | 61 | Details |
| US4153917A | Image stabilizer system for stop-action playback | Expired / Lapsed | 1978-01-23 | 1979-05-08 | 9 | Details |
| US4151893A | Wing in ground effect vehicle | Expired / Lapsed | 1977-09-08 | 1979-05-01 | 23 | Details |
| US4151411A | Laser safety goggles | Expired / Lapsed | 1978-02-09 | 1979-04-24 | 34 | Details |
| US4144530A | Combined intrusion sensor line | Expired / Lapsed | 1977-11-17 | 1979-03-13 | 6 | Details |
| US4140398A | Laser autoalignment system using distortion compensated ref… | Expired / Lapsed | 1977-09-16 | 1979-02-20 | 19 | Details |
| US4139897A | Fast two dimensional fourier transform device | Expired / Lapsed | 1977-03-18 | 1979-02-13 | 11 | Details |
| US4138660A | Automated flash-bang method and apparatus for determining l… | Expired / Lapsed | 1977-09-14 | 1979-02-06 | 9 | Details |
| US4133204A | Roughness diagnostic tool | Expired / Lapsed | 1978-05-15 | 1979-01-09 | 14 | Details |
| US4132681A | Fluorinated polyether network polymers | Expired / Lapsed | 1976-10-29 | 1979-01-02 | 6 | Details |
| US4129087A | Combination pursuit and compensatory display system | Expired / Lapsed | 1977-08-19 | 1978-12-12 | 22 | Details |
| US4128300A | Optical logic elements | Expired / Lapsed | 1977-09-26 | 1978-12-05 | 18 | Details |
| US4128301A | Optical waveguide power divider | Expired / Lapsed | 1977-03-29 | 1978-12-05 | 4 | Details |
| US4119164A | Stand-aid invalid wheelchair | Expired / Lapsed | 1977-08-01 | 1978-10-10 | 7 | Details |
| US4118782A | Digital sound velocity calculator | Expired / Lapsed | 1977-03-24 | 1978-10-03 | 8 | Details |
| US4115753A | Fiber optic acoustic array | Expired / Lapsed | 1977-07-18 | 1978-09-19 | 13 | Details |
| US4114135A | Acoustic device | Expired / Lapsed | 1975-06-20 | 1978-09-12 | 11 | Details |
| US4112430A | Beamformer for wideband signals | Expired / Lapsed | 1977-06-01 | 1978-09-05 | 16 | Details |
| US4110004A | Complex photodichroic spatial filter | Expired / Lapsed | 1977-01-12 | 1978-08-29 | 8 | Details |
| US4104533A | Wideband optical isolator | Expired / Lapsed | 1977-02-28 | 1978-08-01 | 4 | Details |
| US4101893A | Aircraft landing aid for zero-zero visibility landings | Expired / Lapsed | 1977-08-05 | 1978-07-18 | 8 | Details |
| US4100498A | Discrete chirp frequency synthesizer | Expired / Lapsed | 1977-06-20 | 1978-07-11 | 14 | Details |
| US4100571A | 360° Non-programmed visual system | Expired / Lapsed | 1977-02-03 | 1978-07-11 | 31 | Details |
| US4097749A | Fourier power spectra of optical images using CCD's | Expired / Lapsed | 1977-01-06 | 1978-06-27 | 7 | Details |
| US4097294A | Preparation of ceramics | Expired / Lapsed | 1976-08-23 | 1978-06-27 | 7 | Details |
| US4097865A | Electronic countermeasure sequence timer | Expired / Lapsed | 1971-06-01 | 1978-06-27 | 7 | Details |
| US4093380A | Optical systems utilizing three-wave heterodyne detectors | Expired / Lapsed | 1976-11-04 | 1978-06-06 | 6 | Details |
| US4088387A | Optical switch | Expired / Lapsed | 1977-02-22 | 1978-05-09 | 15 | Details |
| US4086867A | Boundary layer inlets and transverse mounted pumps for wate… | Expired / Lapsed | 1977-03-07 | 1978-05-02 | 12 | Details |
| US4086769A | Compound memory engine | Expired / Lapsed | 1975-05-19 | 1978-05-02 | 9 | Details |
| US4086616A | All-weather multi-spectral imaging system | Expired / Lapsed | 1976-12-23 | 1978-04-25 | 7 | Details |
| US4081802A | Radar and navigation chart overlay video display system | Expired / Lapsed | 1977-01-06 | 1978-03-28 | 13 | Details |
| US4081787A | Prioritied photo-isolated digital data transmission system | Expired / Lapsed | 1976-12-27 | 1978-03-28 | 7 | Details |
| US4081214A | Low altitude optical altimeter | Expired / Lapsed | 1976-07-06 | 1978-03-28 | 2 | Details |
| US4077005A | Secure position identity and time reporting system | Expired / Lapsed | 1971-06-18 | 1978-02-28 | 6 | Details |
| US4073010A | Correlation methods and apparatus utilizing mellin transfor… | Expired / Lapsed | 1976-07-23 | 1978-02-07 | 13 | Details |
| US4070092A | Active waveguide branch with variable synchronism | Expired / Lapsed | 1976-09-22 | 1978-01-24 | 5 | Details |
| US4070094A | Optical waveguide interferometer modulator-switch | Expired / Lapsed | 1975-08-25 | 1978-01-24 | 9 | Details |
| US4065771A | Random scanning receiver | Expired / Lapsed | 1976-09-14 | 1977-12-27 | 7 | Details |
| US4064360A | High speed digital switch | Expired / Lapsed | 1976-07-06 | 1977-12-20 | 9 | Details |
| US4054879A | Dual-frequency, remote ocean-wave spectrometer | Expired / Lapsed | 1976-11-19 | 1977-10-18 | 16 | Details |
| US4054786A | Running average computer | Expired / Lapsed | 1973-09-24 | 1977-10-18 | 11 | Details |
| US4048048A | Apparatus for making a memory wire | Expired / Lapsed | 1976-04-07 | 1977-09-13 | 2 | Details |
| US4045140A | Means for near real time C-W laser source characterization | Expired / Lapsed | 1975-12-15 | 1977-08-30 | 7 | Details |
| US4042823A | Optical scanner | Expired / Lapsed | 1976-03-17 | 1977-08-16 | 9 | Details |
| US4041441A | Diver's pulse stretch sonar | Expired / Lapsed | 1976-08-13 | 1977-08-09 | 9 | Details |
| US4041500A | Line scan radar antenna using a single motor | Expired / Lapsed | 1976-05-12 | 1977-08-09 | 12 | Details |
| US4041397A | Satellite up link diversity switch | Expired / Lapsed | 1976-04-28 | 1977-08-09 | 2 | Details |
| US4040059A | Missile body telemetry system | Expired / Lapsed | 1976-08-30 | 1977-08-02 | 10 | Details |
| US4039833A | High density infrared detector array | Expired / Lapsed | 1976-08-17 | 1977-08-02 | 11 | Details |
| US4035799A | Digital mean clutter doppler compensation system | Expired / Lapsed | 1975-11-04 | 1977-07-12 | 12 | Details |
| US4032036A | Retaining clip | Expired / Lapsed | 1976-11-01 | 1977-06-28 | 14 | Details |
| US4032885A | Digital correlator | Expired / Lapsed | 1976-03-01 | 1977-06-28 | 11 | Details |
| US4032767A | High-frequency ccd adder and multiplier | Expired / Lapsed | 1976-02-26 | 1977-06-28 | 17 | Details |
| US4030831A | Phase detector for optical figure sensing | Expired / Lapsed | 1976-03-22 | 1977-06-21 | 3 | Details |
| US4030038A | Multiple dumping integrator | Expired / Lapsed | 1976-02-27 | 1977-06-14 | 4 | Details |
| US4025145A | Repairable shielded cable connector | Expired / Lapsed | 1976-05-17 | 1977-05-24 | 8 | Details |
| US4025194A | Common aperture laser transmitter/receiver | Expired / Lapsed | 1976-03-22 | 1977-05-24 | 7 | Details |
| US4025848A | Waveform comparing phasemeter | Expired / Lapsed | 1975-09-11 | 1977-05-24 | 20 | Details |
| US4021846A | Liquid crystal stereoscopic viewer | Expired / Lapsed | 1972-09-25 | 1977-05-03 | 25 | Details |
| US4017859A | Multi-path signal enhancing apparatus | Expired / Lapsed | 1975-12-22 | 1977-04-12 | 6 | Details |
| US4016761A | Optical temperature probe | Expired / Lapsed | 1974-04-18 | 1977-04-12 | 15 | Details |
| US4016407A | Universal modular controller | Expired / Lapsed | 1975-09-19 | 1977-04-05 | 4 | Details |
| US4015257A | Radar detection of turbulence in precipitation | Expired / Lapsed | 1975-09-11 | 1977-03-29 | 6 | Details |
| US4014020A | Automatic gain control circuit for high range resolution co… | Expired / Lapsed | 1971-08-13 | 1977-03-22 | 4 | Details |
| US4012089A | Electronic equipment enclosure | Expired / Lapsed | 1974-04-08 | 1977-03-15 | 5 | Details |
| US4010250A | Radioactive iodine (125I) labeling of latex particles | Expired / Lapsed | 1975-03-06 | 1977-03-01 | 8 | Details |
| US4009960A | Passive optical rangefinder | Expired / Lapsed | 1975-02-12 | 1977-03-01 | 10 | Details |
| US4010467A | Missile post-multiple-target resolution guidance | Expired / Lapsed | 1972-03-02 | 1977-03-01 | 4 | Details |
| US4005282A | Decometer | Expired / Lapsed | 1975-09-25 | 1977-01-25 | 10 | Details |
| US4002898A | Single mode laser multiterminal optical data communication … | Expired / Lapsed | 1976-01-26 | 1977-01-11 | 4 | Details |
| US4003053A | Target adaptive radar system | Expired / Lapsed | 1966-12-16 | 1977-01-11 | 4 | Details |
| US4000525A | Ceramic prosthetic implant suitable for a knee joint plateau | Expired / Lapsed | 1975-08-21 | 1977-01-04 | 10 | Details |
| US3987292A | Discrete Fourier transform via cross correlation charge tra… | Expired / Lapsed | 1975-06-02 | 1976-10-19 | 5 | Details |
| US3986775A | Remote measurement of fluid temperature by raman scattered … | Expired / Lapsed | 1974-12-26 | 1976-10-19 | 14 | Details |
| US3982280A | Functional ankle for a prosthetic limb | Expired / Lapsed | 1975-10-06 | 1976-09-28 | 2 | Details |
| US3983501A | Hybrid tracking loop for detecting phase shift keyed signals | Expired / Lapsed | 1975-09-29 | 1976-09-28 | 11 | Details |
| US3981810A | Grease composition | Expired / Lapsed | 1975-11-11 | 1976-09-21 | 6 | Details |
| US3982246A | General method of geometrical passive ranging | Expired / Lapsed | 1961-02-20 | 1976-09-21 | 14 | Details |
| US3978797A | Radiometric target detection device | Expired / Lapsed | 1971-04-28 | 1976-09-07 | 2 | Details |
| US3976976A | Method and means to access and extended memory unit | Expired / Lapsed | 1975-04-04 | 1976-08-24 | 8 | Details |
| US3973258A | Transient event data acquisition apparatus for use with rad… | Expired / Lapsed | 1975-01-24 | 1976-08-03 | 15 | Details |
| US3972050A | End fed electric microstrip quadrupole antenna | Expired / Lapsed | 1975-04-24 | 1976-07-27 | 7 | Details |
| US3971931A | Led image tube light valve | Expired / Lapsed | 1975-01-23 | 1976-07-27 | 10 | Details |
| US3970862A | Polymeric sensor of vibration and dynamic pressure | Expired / Lapsed | 1974-06-25 | 1976-07-20 | 8 | Details |
| US3968762A | Triple hybrid watercraft | Expired / Lapsed | 1975-08-21 | 1976-07-13 | 6 | Details |
| US3964013A | Cavitating parametric underwater acoustic source | Expired / Lapsed | 1974-10-22 | 1976-06-15 | 7 | Details |
| US3961282A | Tracking status detector for a digital delay lock loop | Expired / Lapsed | 1975-04-28 | 1976-06-01 | 16 | Details |
| US3961171A | Method of obtaining correlation between certain selected sa… | Expired / Lapsed | 1975-02-18 | 1976-06-01 | 11 | Details |
| US3959582A | Solid state electronically rotatable raster scan for televi… | Expired / Lapsed | 1975-03-31 | 1976-05-25 | 7 | Details |
| US3954931A | Process for making a molded valve housing for a prosthetic … | Expired / Lapsed | 1974-04-12 | 1976-05-04 | 4 | Details |
| US3953221A | Fully dense ceramic article and process employing magnesium… | Expired / Lapsed | 1975-04-22 | 1976-04-27 | 6 | Details |
| US3949490A | Simulator including improved holographic heads up display s… | Expired / Lapsed | 1974-10-25 | 1976-04-13 | 7 | Details |
| US3949378A | Computer memory addressing employing base and index registe… | Expired / Lapsed | 1974-12-09 | 1976-04-06 | 4 | Details |
| US3947850A | Notch fed electric microstrip dipole antenna | Expired / Lapsed | 1975-04-24 | 1976-03-30 | 13 | Details |
| US3947833A | Automatic target detection system | Expired / Lapsed | 1974-11-20 | 1976-03-30 | 6 | Details |
| US3943514A | Dual base line interferometer antenna | Expired / Lapsed | 1970-11-23 | 1976-03-09 | 8 | Details |
| US3940602A | Signal processing imager array using charge transfer concep… | Expired / Lapsed | 1974-09-23 | 1976-02-24 | 12 | Details |
| US3940455A | Hydrocarbon polymers | Expired / Lapsed | 1970-08-31 | 1976-02-24 | 6 | Details |
| US3939334A | Closest point of approach calculator | Expired / Lapsed | 1975-01-02 | 1976-02-17 | 6 | Details |
| US3939467A | Transducer | Expired / Lapsed | 1974-04-08 | 1976-02-17 | 2 | Details |
| US3939461A | Correlation system using matched signals | Expired / Lapsed | 1962-11-19 | 1976-02-17 | 20 | Details |
| US3937561A | Liquid crystal optical image attenuator | Expired / Lapsed | 1974-12-02 | 1976-02-10 | 9 | Details |
| US3938145A | Fast-scanning broad band radar system | Expired / Lapsed | 1974-06-03 | 1976-02-10 | 7 | Details |
| US3935440A | Catapult breakaway load simulator circuit | Expired / Lapsed | 1975-01-30 | 1976-01-27 | 10 | Details |
| US3935308A | Wound covering and method of application | Expired / Lapsed | 1974-08-08 | 1976-01-27 | 2 | Details |
| US3933410A | Optical connector with single scrambling volume | Expired / Lapsed | 1974-11-29 | 1976-01-20 | 5 | Details |
| US3934203A | Spread spectrum modem | Expired / Lapsed | 1974-05-24 | 1976-01-20 | 2 | Details |
| US3930718A | Electro-optic modulator | Expired / Lapsed | 1974-04-12 | 1976-01-06 | 8 | Details |
| US3931392A | Enhancement of ultimate tensile strength of carbon fibers | Expired / Lapsed | 1974-01-10 | 1976-01-06 | 9 | Details |
| US3928839A | Sonar system | Expired / Lapsed | 1968-09-05 | 1975-12-23 | 5 | Details |
| US3926367A | Complex filters, convolvers, and multipliers | Expired / Lapsed | 1974-09-27 | 1975-12-16 | 10 | Details |
| US3926056A | Conductivity, temperature and pressure measuring system | Expired / Lapsed | 1974-09-26 | 1975-12-16 | 6 | Details |
| US3923374A | High speed electro-optic waveguide modulator | Expired / Lapsed | 1974-07-22 | 1975-12-02 | 10 | Details |
| US3922063A | Winch mounted optical data transmission cable with fluid co… | Expired / Lapsed | 1974-08-29 | 1975-11-25 | 6 | Details |
| US3922673A | IFF interrogator identification system | Expired / Lapsed | 1974-05-31 | 1975-11-25 | 10 | Details |
| US3920199A | Rate-gyro stabilized platform | Expired / Lapsed | 1974-05-03 | 1975-11-18 | 5 | Details |
| US3920982A | Continuous fiber optical transmit and receive terminal | Expired / Lapsed | 1974-02-08 | 1975-11-18 | 10 | Details |
| US3918100A | Sputtering of bone on prostheses | Expired / Lapsed | 1974-05-13 | 1975-11-11 | 14 | Details |
| US3916313A | PSK-FSK spread spectrum modulation/demodulation | Expired / Lapsed | 1974-11-25 | 1975-10-28 | 12 | Details |
| US3916248A | Superconductive gradiometric device | Expired / Lapsed | 1970-04-06 | 1975-10-28 | 9 | Details |
| US3913099A | Automatic, digitally controlled radar target matched filter | Expired / Lapsed | 1970-06-24 | 1975-10-14 | 5 | Details |
| US3911345A | Adaptive control system using command tailoring | Expired / Lapsed | 1973-06-04 | 1975-10-07 | 11 | Details |
| US3909108A | Optical switch and modulator | Expired / Lapsed | 1974-05-28 | 1975-09-30 | 5 | Details |
| US3908933A | Guided missile | Expired / Lapsed | 1956-06-26 | 1975-09-30 | 37 | Details |
| US3906493A | Autocorrelation type spectral comparison fuze system | Expired / Lapsed | 1959-03-27 | 1975-09-16 | 10 | Details |
| US3905009A | Transducer array scanning system | Expired / Lapsed | 1974-09-20 | 1975-09-09 | 12 | Details |
| US3904269A | Fiber optic cable connector | Expired / Lapsed | 1974-01-28 | 1975-09-09 | 3 | Details |
| US3902786A | Optical access coupler for fiber bundles | Expired / Lapsed | 1974-11-29 | 1975-09-02 | 5 | Details |
| US3903432A | Integration gate | Expired / Lapsed | 1974-08-07 | 1975-09-02 | 6 | Details |
| US3903497A | Opto-acoustic hydrophone | Expired / Lapsed | 1974-06-14 | 1975-09-02 | 3 | Details |
| US3903407A | Method for correlating frequency-modulated signals | Expired / Lapsed | 1963-12-11 | 1975-09-02 | 6 | Details |
| US3900742A | Threshold logic using complementary mos device | Expired / Lapsed | 1974-06-24 | 1975-08-19 | 9 | Details |
| US3900721A | Serial-access linear transform | Expired / Lapsed | 1974-02-14 | 1975-08-19 | 8 | Details |
| US3900872A | Radar data converter and display system | Expired / Lapsed | 1967-06-27 | 1975-08-19 | 13 | Details |
| US3898984A | Ambulatory patient monitoring system | Expired / Lapsed | 1974-02-04 | 1975-08-12 | 4 | Details |
| US3899145A | Laser transmitting and receiving lens optics | Expired / Lapsed | 1973-07-20 | 1975-08-12 | 8 | Details |
| US3896792A | Real-time cyclic pulmonary function test system | Expired / Lapsed | 1974-05-15 | 1975-07-29 | 4 | Details |
| US3895183A | Waterborne vehicle trainer visual system | Expired / Lapsed | 1973-10-29 | 1975-07-15 | 13 | Details |
| US3892648A | Electrochemical deposition of bone | Expired / Lapsed | 1974-04-16 | 1975-07-01 | 11 | Details |
| US3890840A | Laser controlled fathometer | Expired / Lapsed | 1974-06-07 | 1975-06-24 | 9 | Details |
| US3891871A | Pressure release hemispherical piezoelectric type transducer | Expired / Lapsed | 1974-05-24 | 1975-06-24 | 5 | Details |
| US3888122A | Method and apparatus for obtaining the fine scale structure… | Expired / Lapsed | 1974-08-09 | 1975-06-10 | 7 | Details |
| US3889108A | Adaptive low pass filter | Expired / Lapsed | 1974-07-25 | 1975-06-10 | 5 | Details |
| US3885240A | Storage radar system | Expired / Lapsed | 1967-06-27 | 1975-05-20 | 14 | Details |
| US3883220A | Optical switch | Expired / Lapsed | 1973-12-10 | 1975-05-13 | 6 | Details |
| US3878008A | Method of forming high reliability mesa diode | Expired / Lapsed | 1974-02-25 | 1975-04-15 | 9 | Details |
| US3872293A | Multi-dimensional fourier transform optical processor | Expired / Lapsed | 1973-07-30 | 1975-03-18 | 18 | Details |
| US3872407A | Rapidly tunable laser | Expired / Lapsed | 1972-09-01 | 1975-03-18 | 9 | Details |
| US3869693A | Scanning arrangement for sonar beams | Expired / Lapsed | 1967-11-22 | 1975-03-04 | 10 | Details |
| US3868686A | Range tracking device for a portable attack warning radar | Expired / Lapsed | 1973-04-16 | 1975-02-25 | 4 | Details |
| CA962835A | Interferometric remote gauge | Expired / Lapsed | 1972-06-12 | 1975-02-18 | 0 | Details |
| US3865009A | Launcher mount | Expired / Lapsed | 1973-09-13 | 1975-02-11 | 7 | Details |
| US3860672A | Low density resin composite of high stiffness | Expired / Lapsed | 1974-04-12 | 1975-01-14 | 5 | Details |
| US3858437A | Acoustic test method and apparatus | Expired / Lapsed | 1973-03-27 | 1975-01-07 | 19 | Details |
| US3856988A | Scanning optical imaging system with real-time image thresh… | Expired / Lapsed | 1973-08-24 | 1974-12-24 | 11 | Details |
| US3854060A | Transducer for fm sonar application | Expired / Lapsed | 1973-10-12 | 1974-12-10 | 13 | Details |
| US3852222A | Fluorinated epoxy resins | Expired / Lapsed | 1973-06-25 | 1974-12-03 | 15 | Details |
| US3851300A | Transducer | Expired / Lapsed | 1971-11-03 | 1974-11-26 | 17 | Details |
| US3846764A | Technique for information storage using anisotropic color c… | Expired / Lapsed | 1973-05-18 | 1974-11-05 | 13 | Details |
| US3842841A | Constant current power pack for bone healing and method of … | Expired / Lapsed | 1971-10-29 | 1974-10-22 | 16 | Details |
| US3841148A | Tetrahedral stereotaxic jig | Expired / Lapsed | 1973-12-21 | 1974-10-15 | 9 | Details |
| US3840290A | Zoom lens system having four movable members | Expired / Lapsed | 1973-08-13 | 1974-10-08 | 4 | Details |
| US3838422A | Radar adaptive video processor | Expired / Lapsed | 1973-09-20 | 1974-09-24 | 17 | Details |
| US3834795A | Direct vision laser range gate system | Expired / Lapsed | 1973-05-02 | 1974-09-10 | 6 | Details |
| US3833797A | Statistical noise processor | Expired / Lapsed | 1973-11-14 | 1974-09-03 | 11 | Details |
| US3833300A | Three {37 d{38 {11 weapons sight | Expired / Lapsed | 1973-05-14 | 1974-09-03 | 13 | Details |
| US3833402A | Graphite fiber treatment | Expired / Lapsed | 1972-03-27 | 1974-09-03 | 13 | Details |
| US3831013A | Correlators using shift registers | Expired / Lapsed | 1973-02-20 | 1974-08-20 | 7 | Details |
| US3831137A | Acousto-optic underwater detector | Expired / Lapsed | 1972-04-14 | 1974-08-20 | 5 | Details |
| US3825320A | High-pressure optical bulkhead penetrator | Expired / Lapsed | 1973-03-02 | 1974-07-23 | 10 | Details |
| US3824548A | Satellite communications link monitor | Expired / Lapsed | 1973-01-15 | 1974-07-16 | 5 | Details |
| US3815429A | Precision non-translating mirror/lens mount | Expired / Lapsed | 1973-04-19 | 1974-06-11 | 8 | Details |
| US3816735A | Multi-channel optical correlator system | Expired / Lapsed | 1972-03-15 | 1974-06-11 | 12 | Details |
| US3813795A | Laser device for moving target marksmanship training | Expired / Lapsed | 1973-06-08 | 1974-06-04 | 4 | Details |
| US3811648A | Azimuth readout system | Expired / Lapsed | 1973-07-09 | 1974-05-21 | 9 | Details |
| US3806915A | Multithreshold analog to digital converter | Expired / Lapsed | 1972-09-05 | 1974-04-23 | 4 | Details |
| US3803916A | Direct measurement of earth{40 s vertical deflection using … | Expired / Lapsed | 1973-02-09 | 1974-04-16 | 3 | Details |
| US3804977A | Colored running light simulator | Expired / Lapsed | 1972-11-20 | 1974-04-16 | 7 | Details |
| US3805170A | Transition detector | Expired / Lapsed | 1969-01-03 | 1974-04-16 | 7 | Details |
| US3803387A | Alignment error detection system | Expired / Lapsed | 1972-09-20 | 1974-04-09 | 2 | Details |
| US3803544A | Pressure control system | Expired / Lapsed | 1972-07-17 | 1974-04-09 | 18 | Details |
| US3800906A | Laser heterodyne acoustic sensor | Expired / Lapsed | 1972-08-22 | 1974-04-02 | 7 | Details |
| US3801983A | Radar receiver noise ratio detector | Expired / Lapsed | 1972-04-24 | 1974-04-02 | 7 | Details |
| US3798454A | Device for counting accelerations, measuring magnitudes the… | Expired / Lapsed | 1972-04-25 | 1974-03-19 | 5 | Details |
| US3795879A | Composite dispersive filter | Expired / Lapsed | 1973-04-04 | 1974-03-05 | 7 | Details |
| US3795772A | Synchronization system for pulse orthogonal multiplexing sy… | Expired / Lapsed | 1972-05-01 | 1974-03-05 | 4 | Details |
| US3794818A | Automatic memory test and correction system | Expired / Lapsed | 1972-07-03 | 1974-02-26 | 6 | Details |
| US3794272A | Electro-optical guidance system | Expired / Lapsed | 1967-02-13 | 1974-02-26 | 9 | Details |
| US3793070A | Method of varying the carrier concentration of lead-tin sul… | Expired / Lapsed | 1971-06-01 | 1974-02-19 | 14 | Details |
| US3790282A | Flame-in-engine photometer detector and alarm for phosphoru… | Expired / Lapsed | 1972-03-23 | 1974-02-05 | 10 | Details |
| US3789445A | Buoy construction | Expired / Lapsed | 1971-11-12 | 1974-02-05 | 3 | Details |
| US3790276A | Direct measurement of ship body distortion using a laser be… | Expired / Lapsed | 1971-04-07 | 1974-02-05 | 6 | Details |
| US3789353A | Diver communication system | Expired / Lapsed | 1973-01-03 | 1974-01-29 | 18 | Details |
| US3789350A | Reduced bandwidth processing for ultrasonic image conversion | Expired / Lapsed | 1972-10-13 | 1974-01-29 | 10 | Details |
| US3789303A | Method and apparatus for synchronizing split-phase pcm sign… | Expired / Lapsed | 1972-05-01 | 1974-01-29 | 6 | Details |
| US3789417A | Circularly symmetric retrodirective antenna | Expired / Lapsed | 1972-01-25 | 1974-01-29 | 18 | Details |
| US3787619A | Wide angle display system | Expired / Lapsed | 1972-06-07 | 1974-01-22 | 12 | Details |
| US3786481A | Digital television character generator | Expired / Lapsed | 1972-04-19 | 1974-01-15 | 8 | Details |
| US3784235A | Tubular adhesive joint with snap lock | Expired / Lapsed | 1971-10-08 | 1974-01-08 | 9 | Details |
| US3780220A | Remote control underwater observation vehicle | Expired / Lapsed | 1972-08-14 | 1973-12-18 | 14 | Details |
| US3778635A | Liquid parametric optical mixing device | Expired / Lapsed | 1972-06-08 | 1973-12-11 | 7 | Details |
| US3778007A | Rod television-guided drone to perform reconnaissance and o… | Expired / Lapsed | 1972-05-08 | 1973-12-11 | 12 | Details |
| US3778833A | Magnetic-electronic position encoder | Expired / Lapsed | 1971-07-29 | 1973-12-11 | 4 | Details |
| US3777276A | Phase lock loop with automatic step by step search sweep fo… | Expired / Lapsed | 1973-01-24 | 1973-12-04 | 10 | Details |
| US3771416A | Removable weapons rail | Expired / Lapsed | 1971-09-22 | 1973-11-13 | 7 | Details |
| US3771065A | Tunable internal-feedback liquid crystal-dye laser | Expired / Lapsed | 1972-08-09 | 1973-11-06 | 5 | Details |
| US3770949A | Acoustic surface wave correlators and convolvers | Expired / Lapsed | 1972-04-21 | 1973-11-06 | 12 | Details |
| US3769844A | Solid state acceleration counter | Expired / Lapsed | 1971-04-29 | 1973-11-06 | 9 | Details |
| US3768907A | Scanning aperture partially coherent optical correlator | Expired / Lapsed | 1972-07-17 | 1973-10-30 | 6 | Details |
| US3766316A | Frame synchronization detector | Expired / Lapsed | 1972-05-03 | 1973-10-16 | 15 | Details |
| US3766496A | Feedback-type acoustic surface wave device | Expired / Lapsed | 1971-02-04 | 1973-10-16 | 21 | Details |
| US3764924A | Synchronous detection system | Expired / Lapsed | 1972-05-08 | 1973-10-09 | 13 | Details |
| US3763463A | Shrapnel sonar | Expired / Lapsed | 1972-09-21 | 1973-10-02 | 9 | Details |
| US3761809A | Noise modulated analogue signal presence detector | Expired / Lapsed | 1970-04-27 | 1973-09-25 | 9 | Details |
| US3757093A | Self leveling system using periodic perturbations | Expired / Lapsed | 1972-09-22 | 1973-09-04 | 7 | Details |
| US3755627A | Programmable feature extractor and speech recognizer | Expired / Lapsed | 1971-12-22 | 1973-08-28 | 16 | Details |
| US3754121A | Solid state instrument system for digital counting and cont… | Expired / Lapsed | 1972-07-28 | 1973-08-21 | 11 | Details |
| US3748751A | Laser machine gun simulator | Expired / Lapsed | 1972-09-07 | 1973-07-31 | 6 | Details |
| US3748904A | Semiconductor electromagnetic radiation isolated thermocoup… | Expired / Lapsed | 1971-05-28 | 1973-07-31 | 4 | Details |
| US3750174A | Aided angle tracking device | Expired / Lapsed | 1963-11-20 | 1973-07-31 | 15 | Details |
| US3748374A | Multi-color periscope view simulator | Expired / Lapsed | 1972-02-07 | 1973-07-24 | 2 | Details |
| US3746454A | Infrared receiver for optical radar | Expired / Lapsed | 1971-03-03 | 1973-07-17 | 7 | Details |
| US3745573A | Proximity fuze circuit | Expired / Lapsed | 1963-09-24 | 1973-07-10 | 8 | Details |
| US3737790A | Noise-riding slicer | Expired / Lapsed | 1971-12-21 | 1973-06-05 | 10 | Details |
| US3737120A | Radar map comparison guidance system | Expired / Lapsed | 1967-12-07 | 1973-06-05 | 7 | Details |
| US3733981A | Lens protective system for deep sea camera | Expired / Lapsed | 1972-07-17 | 1973-05-22 | 6 | Details |
| US3735271A | Pulse width coded signal detector | Expired / Lapsed | 1971-10-22 | 1973-05-22 | 4 | Details |
| US3735272A | Automatic gain control | Expired / Lapsed | 1971-10-20 | 1973-05-22 | 6 | Details |
| US3731743A | Fire control apparatus air pollution product abatement | Expired / Lapsed | 1971-10-20 | 1973-05-08 | 9 | Details |
| US3731116A | High frequency field effect transistor switch | Expired / Lapsed | 1972-03-02 | 1973-05-01 | 10 | Details |
| US3727142A | Pulse stream noise discriminator | Expired / Lapsed | 1968-12-02 | 1973-04-10 | 15 | Details |
| US3727225A | Ranging and detection system | Expired / Lapsed | 1962-05-29 | 1973-04-10 | 4 | Details |
| US3725758A | Automatic feedback closed loop system for forward speed con… | Expired / Lapsed | 1971-06-01 | 1973-04-03 | 7 | Details |
| US3724383A | Lasser stimulated ordnance initiation device | Expired / Lapsed | 1971-02-01 | 1973-04-03 | 2 | Details |
| US3721500A | Instrument for measuring the depolarization of backscattere… | Expired / Lapsed | 1971-08-06 | 1973-03-20 | 6 | Details |
| US3721410A | Rotating surveillance vehicle | Expired / Lapsed | 1962-08-29 | 1973-03-20 | 2 | Details |
| US3720007A | Visual display simulator | Expired / Lapsed | 1971-01-04 | 1973-03-13 | 5 | Details |
| US3720935A | Fault detection system | Expired / Lapsed | 1970-12-30 | 1973-03-13 | 13 | Details |
| US3718898A | Transducer | Expired / Lapsed | 1971-12-13 | 1973-02-27 | 0 | Details |
| US3718927A | Automatic digital error detector for radar range tracking | Expired / Lapsed | 1971-04-23 | 1973-02-27 | 5 | Details |
| US3715748A | Method and apparatus for measuring the intensity of atmosph… | Expired / Lapsed | 1971-04-30 | 1973-02-06 | 6 | Details |
| US3713167A | Omni-steerable cardioid antenna | Expired / Lapsed | 1971-08-05 | 1973-01-23 | 14 | Details |
| US3713141A | Synchro-to-digital conversion method and apparatus | Expired / Lapsed | 1971-05-21 | 1973-01-23 | 15 | Details |
| US3711040A | Outboard missile control surface and actuator | Expired / Lapsed | 1971-04-20 | 1973-01-16 | 7 | Details |
| US3706772A | Fluorodiglycidyl ethers | Expired / Lapsed | 1971-03-23 | 1972-12-19 | 0 | Details |
| US3706691A | Depotting solvent | Expired / Lapsed | 1970-09-04 | 1972-12-19 | 9 | Details |
| US3706928A | Coherent frequency multiplier and encoder | Expired / Lapsed | 1964-11-12 | 1972-12-19 | 7 | Details |
| US3703968A | Linear linkage manipulator arm | Expired / Lapsed | 1971-09-20 | 1972-11-28 | 10 | Details |
| US3703145A | Selective arming mode and detonation option ordnance fuze | Expired / Lapsed | 1969-12-05 | 1972-11-21 | 9 | Details |
| US3703682A | Long axis gradiometer | Expired / Lapsed | 1968-10-30 | 1972-11-21 | 7 | Details |
| US3702476A | Digital programmed transmitter | Expired / Lapsed | 1963-03-18 | 1972-11-07 | 13 | Details |
| US3700780A | Dual delayed sequence generator with read only memory contr… | Expired / Lapsed | 1971-05-04 | 1972-10-24 | 9 | Details |
| US3701059A | Remote controlled, adjustable bandwidth low pass filter | Expired / Lapsed | 1971-04-16 | 1972-10-24 | 5 | Details |
| US3701154A | Matched filter | Expired / Lapsed | 1971-03-09 | 1972-10-24 | 4 | Details |
| US3701147A | Surface wave devices for signal processing | Expired / Lapsed | 1971-02-03 | 1972-10-24 | 17 | Details |
| US3700910A | Bragg angle optical matched filter system with coded glass … | Expired / Lapsed | 1970-07-23 | 1972-10-24 | 11 | Details |
| US3699248A | Automatic area of interest television optical probe focus a… | Expired / Lapsed | 1972-01-10 | 1972-10-17 | 8 | Details |
| US3699316A | Strapped-down attitude reference system | Expired / Lapsed | 1971-05-19 | 1972-10-17 | 5 | Details |
| US3699339A | Two-color radiometer | Expired / Lapsed | 1971-04-07 | 1972-10-17 | 10 | Details |
| US3699574A | Scanned cylindrical array monopulse antenna | Expired / Lapsed | 1969-10-16 | 1972-10-17 | 5 | Details |
| US3695555A | Gun-launched glide vehicle with a mid-course and terminal g… | Expired / Lapsed | 1970-06-12 | 1972-10-03 | 11 | Details |
| US3694146A | Formaldehyde gas generator/disseminator | Expired / Lapsed | 1971-01-25 | 1972-09-26 | 0 | Details |
| US3694760A | Feedback switching circuit for eliminating error signals | Expired / Lapsed | 1970-09-30 | 1972-09-26 | 5 | Details |
| US3683385A | Direction finding antenna system | Expired / Lapsed | 1963-03-07 | 1972-08-08 | 15 | Details |
| US3680100A | Randomly phase coded antenna technique for search radar | Expired / Lapsed | 1970-12-15 | 1972-07-25 | 14 | Details |
| US3680090A | Non-main beam reflected iff interrogation rejector | Expired / Lapsed | 1970-07-27 | 1972-07-25 | 9 | Details |
| US3680104A | Phase reversal pulse modulator and pulse compression filter… | Expired / Lapsed | 1970-07-22 | 1972-07-25 | 11 | Details |
| US3680088A | Recursive integrator | Expired / Lapsed | 1970-03-30 | 1972-07-25 | 8 | Details |
| US3680115A | Very low frequency location finding system | Expired / Lapsed | 1969-04-29 | 1972-07-25 | 6 | Details |
| US3680124A | System for determining azimuth | Expired / Lapsed | 1964-05-11 | 1972-07-25 | 28 | Details |
| US3678468A | Digital data storage system | Expired / Lapsed | 1970-12-15 | 1972-07-18 | 12 | Details |
| US3678388A | Ground station system for retransmitting satellite facsimil… | Expired / Lapsed | 1970-12-14 | 1972-07-18 | 4 | Details |
| US3678283A | Radiation sensitive optical tracker | Expired / Lapsed | 1970-10-22 | 1972-07-18 | 12 | Details |
| US3676699A | Asynchronous pulse width filter | Expired / Lapsed | 1971-09-13 | 1972-07-11 | 5 | Details |
| US3673501A | Control logic for linear sequence generators and ring count… | Expired / Lapsed | 1971-08-18 | 1972-06-27 | 10 | Details |
| US3671966A | Multiple target separator | Expired / Lapsed | 1970-08-27 | 1972-06-20 | 8 | Details |
| US3671865A | Automatic net participant synchronizer | Expired / Lapsed | 1964-12-03 | 1972-06-20 | 10 | Details |
| US3670151A | Correlators using shift registers | Expired / Lapsed | 1970-06-05 | 1972-06-13 | 9 | Details |
| US3668308A | A television system for terrain surveillance | Expired / Lapsed | 1970-07-20 | 1972-06-06 | 14 | Details |
| US3667054A | Pulse train decoder with pulse width rejection | Expired / Lapsed | 1971-02-10 | 1972-05-30 | 4 | Details |
| US3665326A | Automatic threshold detector with selectable percentage of … | Expired / Lapsed | 1970-03-30 | 1972-05-23 | 6 | Details |
| US3665469A | Apparatus for improving the lane resolution capabilities of… | Expired / Lapsed | 1970-02-27 | 1972-05-23 | 5 | Details |
| US3660777A | Laser pulse time modulation q-switch | Expired / Lapsed | 1971-04-16 | 1972-05-02 | 14 | Details |
| US3660647A | Automatic signal delay tracking system | Expired / Lapsed | 1969-12-24 | 1972-05-02 | 9 | Details |
| US3657659A | Method and means for measuring phase difference | Expired / Lapsed | 1964-07-13 | 1972-04-18 | 2 | Details |
| US3653769A | Stadiametric ranging system | Expired / Lapsed | 1970-03-06 | 1972-04-04 | 3 | Details |
| US3649934A | Quasi-optical low-pass absorption type filtering system | Expired / Lapsed | 1970-07-17 | 1972-03-14 | 6 | Details |
| US3646556A | Reflected iff interrogation rejector | Expired / Lapsed | 1970-03-25 | 1972-02-29 | 6 | Details |
| US3640178A | Rate stabilization system for a vehicle mounted device | Expired / Lapsed | 1970-04-29 | 1972-02-08 | 12 | Details |
| US3633988A | Helmet-mounted holographic aiming sight | Expired / Lapsed | 1970-07-10 | 1972-01-11 | 6 | Details |
| US3633174A | Memory system having self-adjusting strobe timing | Expired / Lapsed | 1970-04-14 | 1972-01-04 | 5 | Details |
| US3633003A | Off-leveling computer | Expired / Lapsed | 1970-02-11 | 1972-01-04 | 9 | Details |
| US3631850A | Pressure transducer apparatus for microhemocirculation stud… | Expired / Lapsed | 1969-11-13 | 1972-01-04 | 9 | Details |
| US3631250A | Optical positive feedback sensor circuit | Expired / Lapsed | 1970-02-13 | 1971-12-28 | 2 | Details |
| US3626372A | Digital information transmission system | Expired / Lapsed | 1970-04-08 | 1971-12-07 | 12 | Details |
| US3622996A | Electroluminescent display | Expired / Lapsed | 1969-10-06 | 1971-11-23 | 2 | Details |
| US3621131A | Visual environment simulator | Expired / Lapsed | 1969-11-21 | 1971-11-16 | 6 | Details |
| US3621136A | Automatic optical-focusing system for tv cameras | Expired / Lapsed | 1969-09-10 | 1971-11-16 | 11 | Details |
| US3615135A | Laser ranging with polarization modulation | Expired / Lapsed | 1969-05-16 | 1971-10-26 | 0 | Details |
| US3614720A | Logarithmic three-color display sonar | Expired / Lapsed | 1969-11-13 | 1971-10-19 | 15 | Details |
| US3614316A | Secure communication system | Expired / Lapsed | 1964-05-20 | 1971-10-19 | 5 | Details |
| US3612761A | Large-area display system | Expired / Lapsed | 1969-12-19 | 1971-10-12 | 8 | Details |
| US3609671A | Active submarine target echo synthesizer | Expired / Lapsed | 1970-03-23 | 1971-09-28 | 7 | Details |
| US3600237A | Controlled nucleation in zone recrystallized insb films | Expired / Lapsed | 1969-12-17 | 1971-08-17 | 0 | Details |
| US3600510A | Close viewing tv for simulators | Expired / Lapsed | 1969-07-01 | 1971-08-17 | 2 | Details |
| US3598505A | Bellows pump | Expired / Lapsed | 1969-10-24 | 1971-08-10 | 6 | Details |
| US3599208A | Radar system | Expired / Lapsed | 1969-04-25 | 1971-08-10 | 6 | Details |
| US3594556A | Optical sight with electronic image stabilization | Expired / Lapsed | 1969-01-08 | 1971-07-20 | 12 | Details |
| US3582209A | Detection of toxic organophosphoru airborne substances by f… | Expired / Lapsed | 1968-11-14 | 1971-06-01 | 0 | Details |
| US3576944A | Scanning radiometer with plural reference sources | Expired / Lapsed | 1969-01-28 | 1971-05-04 | 11 | Details |
| US3576604A | Method of heat detection | Expired / Lapsed | 1969-03-06 | 1971-04-27 | 0 | Details |
| US3573792A | Universal display panel | Expired / Lapsed | 1968-11-12 | 1971-04-06 | 12 | Details |
| US3573338A | Fresnel image computer | Expired / Lapsed | 1965-08-13 | 1971-04-06 | 4 | Details |
| US3568663A | Physiological data acquisition system | Expired / Lapsed | 1968-12-23 | 1971-03-09 | 4 | Details |
| US3569770A | Selective fast erase dark trace scan converter | Expired / Lapsed | 1968-05-28 | 1971-03-09 | 11 | Details |
| US3569923A | Adaptive acoustic detector apparatus | Expired / Lapsed | 1967-10-30 | 1971-03-09 | 13 | Details |
| US3566913A | Diaphragm valve | Expired / Lapsed | 1968-11-14 | 1971-03-02 | 5 | Details |
| US3566254A | Series-type voltage regulator | Expired / Lapsed | 1969-05-19 | 1971-02-23 | 0 | Details |
| US3565060A | Biopotential sensor employing integrated circuitry | Expired / Lapsed | 1968-08-21 | 1971-02-23 | 4 | Details |
| US3564455A | Stable square-wave frequency generator using two operationa… | Expired / Lapsed | 1969-07-24 | 1971-02-16 | 0 | Details |
| US3564134A | Two-camera remote drone control | Expired / Lapsed | 1968-07-03 | 1971-02-16 | 8 | Details |
| US3562632A | Nuclear induction flow meter (utilizing principle of nuclea… | Expired / Lapsed | 1969-04-25 | 1971-02-09 | 5 | Details |
| US3560913A | Acoustic pulse focusing means | Expired / Lapsed | 1968-10-09 | 1971-02-02 | 0 | Details |
| US3560724A | Optical correlators | Expired / Lapsed | 1968-08-19 | 1971-02-02 | 4 | Details |
| US3558369A | Method of treating variable transition temperature alloys | Expired / Lapsed | 1969-06-12 | 1971-01-26 | 0 | Details |
| US3555553A | Coaxial-line to waveguide transition for horn antenna | Expired / Lapsed | 1969-01-31 | 1971-01-12 | 0 | Details |
| US3555179A | Analogue video correlator for position fixing of an aircraft | Expired / Lapsed | 1969-01-02 | 1971-01-12 | 21 | Details |
| US3551837A | Surface wave transducers with side lobe suppression | Expired / Lapsed | 1969-08-13 | 1970-12-29 | 0 | Details |
| US3550123A | Real time passing scene display | Expired / Lapsed | 1967-12-07 | 1970-12-22 | 0 | Details |
| US3548320A | Digital fm sweep generator | Expired / Lapsed | 1968-05-23 | 1970-12-15 | 0 | Details |
| US3542934A | Submarine simulator | Expired / Lapsed | 1968-03-06 | 1970-11-24 | 0 | Details |
| US3541194A | Method for making syntactic foam | Expired / Lapsed | 1968-10-15 | 1970-11-17 | 0 | Details |
| US3541552A | Synchronization system | Expired / Lapsed | 1968-07-26 | 1970-11-17 | 0 | Details |
| US3538443A | General purpose logic package | Expired / Lapsed | 1968-06-11 | 1970-11-03 | 0 | Details |
| US3538313A | Coded strip positioning apparatus | Expired / Lapsed | 1968-05-15 | 1970-11-03 | 0 | Details |
| US3534733A | Spring-loaded suction cup-type biomedical instrumentation e… | Expired / Lapsed | 1968-01-10 | 1970-10-20 | 0 | Details |
| US3532180A | Semi-flexible seal for captured air bubble vehicle | Expired / Lapsed | 1968-05-17 | 1970-10-06 | 0 | Details |
| US3525075A | Automatic data reduction system | Expired / Lapsed | 1967-03-14 | 1970-08-18 | 0 | Details |
| US3518463A | Low inertia high thrust vibrator | Expired / Lapsed | 1969-08-26 | 1970-06-30 | 0 | Details |
| US3517108A | Navigation signal simulator | Expired / Lapsed | 1967-08-30 | 1970-06-23 | 0 | Details |
| US3517170A | System or apparatus for optimizing the operation of a combu… | Expired / Lapsed | 1967-03-29 | 1970-06-23 | 0 | Details |
| US3515910A | Acoustic absorbing material | Expired / Lapsed | 1968-11-12 | 1970-06-02 | 0 | Details |
| US3515342A | Navigation computer | Expired / Lapsed | 1968-06-10 | 1970-06-02 | 0 | Details |
| US3512493A | Adjustable buoyancy lift device | Expired / Lapsed | 1968-04-23 | 1970-05-19 | 0 | Details |
| US3511998A | Acquisition system | Expired / Lapsed | 1966-03-18 | 1970-05-12 | 2 | Details |
| US3508540A | Apparatus for direct measurement of skin conductance | Expired / Lapsed | 1967-02-14 | 1970-04-28 | 0 | Details |
| US3507055A | Missile tracking simulator | Expired / Lapsed | 1968-01-10 | 1970-04-21 | 0 | Details |
| US3507993A | Situation display for aircraft navigation employing crt dis… | Expired / Lapsed | 1968-01-04 | 1970-04-21 | 0 | Details |
| US3508051A | Employing a plurality of dichroic mirrors to produce a thre… | Expired / Lapsed | 1967-07-20 | 1970-04-21 | 0 | Details |
| US3507990A | Long range target | Expired / Lapsed | 1967-02-01 | 1970-04-21 | 0 | Details |
| US3507989A | Multiple observation system | Expired / Lapsed | 1967-01-27 | 1970-04-21 | 0 | Details |
| US3505437A | Method for rotational molding | Expired / Lapsed | 1967-07-17 | 1970-04-07 | 0 | Details |
| US3505637A | Digital overflow threshold for sonar | Expired / Lapsed | 1964-03-10 | 1970-04-07 | 2 | Details |
| US3500302A | Sonar bathymetry system transmit-receive sequence programmer | Expired / Lapsed | 1969-01-13 | 1970-03-10 | 0 | Details |
| US3500164A | Method and apparatus for providing electrical energy to a l… | Expired / Lapsed | 1967-10-23 | 1970-03-10 | 0 | Details |
| US3500217A | Frequency discriminator employing quadrature demodulation t… | Expired / Lapsed | 1967-07-31 | 1970-03-10 | 0 | Details |
| US3499716A | Wide range absolute reflectometer | Expired / Lapsed | 1966-05-27 | 1970-03-10 | 0 | Details |
| US3500240A | Simple traveling wave laser using total - internal - reflec… | Expired / Lapsed | 1964-11-30 | 1970-03-10 | 0 | Details |
| US3498112A | Microwave system for determining water content in fuel oil | Expired / Lapsed | 1968-04-30 | 1970-03-03 | 0 | Details |
| US3497083A | Tensor arm manipulator | Expired / Lapsed | 1968-05-10 | 1970-02-24 | 0 | Details |
| US3491358A | Atmospheric turbulence detection system | Expired / Lapsed | 1968-02-02 | 1970-01-20 | 0 | Details |
| US3491340A | Digital data communication network monitor system | Expired / Lapsed | 1966-10-11 | 1970-01-20 | 0 | Details |
| US3490000A | Correlation matrix for a spectrum analyzer | Expired / Lapsed | 1968-07-10 | 1970-01-13 | 0 | Details |
| US3487406A | Signal processor for diversity frequency radar | Expired / Lapsed | 1968-12-23 | 1969-12-30 | 0 | Details |
| US3486242A | Assault boat coxswain trainer | Expired / Lapsed | 1967-05-29 | 1969-12-30 | 0 | Details |
| US3487203A | Torsional delay line matched filter device | Expired / Lapsed | 1966-12-07 | 1969-12-30 | 0 | Details |
| US3483744A | Rolling wheel test device | Expired / Lapsed | 1967-08-21 | 1969-12-16 | 0 | Details |
| US3479679A | Apparatus for cleansing a contaminated chamber | Expired / Lapsed | 1967-10-23 | 1969-11-25 | 0 | Details |
| US3480452A | Cordierite ceramic process and product | Expired / Lapsed | 1966-08-26 | 1969-11-25 | 0 | Details |
| US3478588A | Cardiac output meter | Expired / Lapsed | 1967-07-17 | 1969-11-18 | 0 | Details |
| US3477295A | Pressure transducer | Expired / Lapsed | 1967-06-12 | 1969-11-11 | 0 | Details |
| US3474709A | Cylinder liner for barrel engine | Expired / Lapsed | 1967-09-28 | 1969-10-28 | 0 | Details |
| US3474264A | Circuit for varying the hysteresis of a schmitt trigger | Expired / Lapsed | 1966-06-16 | 1969-10-21 | 0 | Details |
| US3473055A | Condition responsive d.c. power supply switch | Expired / Lapsed | 1967-01-30 | 1969-10-14 | 0 | Details |
| US3469186A | Stimulus injection system for localizing defective componen… | Expired / Lapsed | 1967-03-14 | 1969-09-23 | 0 | Details |
| US3467461A | Cabinet securing mechansim | Expired / Lapsed | 1967-07-17 | 1969-09-16 | 0 | Details |
| US3467773A | Television monitoring system for penetrating a light backsc… | Expired / Lapsed | 1966-11-07 | 1969-09-16 | 0 | Details |
| US3454752A | Automatic speed controller for propeller shafts | Expired / Lapsed | 1966-03-30 | 1969-07-08 | 0 | Details |
| US3449511A | Position measurement equipment for television images | Expired / Lapsed | 1966-08-24 | 1969-06-10 | 0 | Details |
| US3449581A | Amplifying light conducting conduit with light passage inte… | Expired / Lapsed | 1965-11-30 | 1969-06-10 | 0 | Details |
| US3447961A | Movable substrate method of vaporizing and depositing elect… | Expired / Lapsed | 1967-03-20 | 1969-06-03 | 0 | Details |
| US3448456A | Reflector antenna inflatable with foamed plastic | Expired / Lapsed | 1966-09-12 | 1969-06-03 | 2 | Details |
| US3447033A | Laser,weapon simulator | Expired / Lapsed | 1967-02-21 | 1969-05-27 | 0 | Details |
| US3440651A | Iff active readout control and display system | Expired / Lapsed | 1966-09-01 | 1969-04-22 | 0 | Details |
| US3438038A | Nonreciprocal omnidirectional rapid scan antenna system | Expired / Lapsed | 1966-08-17 | 1969-04-08 | 0 | Details |
| US3437941A | Wide band frequency discriminator | Expired / Lapsed | 1966-04-07 | 1969-04-08 | 0 | Details |
| US3436546A | Laser beam deflector | Expired / Lapsed | 1966-10-13 | 1969-04-01 | 0 | Details |
| US3435452A | Surrogate viewing system | Expired / Lapsed | 1967-08-25 | 1969-03-25 | 0 | Details |
| US3430114A | Field effect transistor in an integrated circuit having an … | Expired / Lapsed | 1966-02-14 | 1969-02-25 | 0 | Details |
| US3425771A | Laser deflection system for display applications | Expired / Lapsed | 1964-12-04 | 1969-02-04 | 0 | Details |
| US3421137A | Echo repeater and/or target simulator | Expired / Lapsed | 1966-02-23 | 1969-01-07 | 0 | Details |
| US3420989A | Synchronizer for digital counters | Expired / Lapsed | 1965-07-16 | 1969-01-07 | 0 | Details |
| US3417455A | Explosive welding | Expired / Lapsed | 1961-01-18 | 1968-12-24 | 0 | Details |
| US3413402A | Radar landmass simulator | Expired / Lapsed | 1967-05-25 | 1968-11-26 | 0 | Details |
| US3412334A | Digital correlator | Expired / Lapsed | 1964-05-06 | 1968-11-19 | 0 | Details |
| US3410641A | Laser range finder device | Expired / Lapsed | 1965-06-25 | 1968-11-12 | 1 | Details |
| US3409869A | Deep submergence acoustic transducer array construction | Expired / Lapsed | 1965-07-21 | 1968-11-05 | 0 | Details |
| US3403733A | Electronics cabinet with fire extinguishing apparatus | Expired / Lapsed | 1966-04-27 | 1968-10-01 | 0 | Details |
| US3404405A | Luneberg lens with staggered waveguide feed | Expired / Lapsed | 1965-04-30 | 1968-10-01 | 0 | Details |
| US3403873A | Guided missile | Expired / Lapsed | 1963-01-24 | 1968-10-01 | 2 | Details |
| US3403238A | Conversion of heat energy to mechanical energy | Expired / Lapsed | 1966-04-05 | 1968-09-24 | 0 | Details |
| US3402634A | Instrument for measuring absolute reflectance and transmitt… | Expired / Lapsed | 1965-03-30 | 1968-09-24 | 2 | Details |
| US3403391A | Integrated versatile display control mechanism | Expired / Lapsed | 1964-07-13 | 1968-09-24 | 0 | Details |
| US3400399A | System and method for obtaining accurate tactical navigation | Expired / Lapsed | 1966-12-29 | 1968-09-03 | 0 | Details |
| US3394380A | Mechanical modulator for stationary tacan antenna | Expired / Lapsed | 1965-10-18 | 1968-07-23 | 0 | Details |
| US3394313A | Symmetrically phase modulated transmission system with mult… | Expired / Lapsed | 1964-09-14 | 1968-07-23 | 0 | Details |
| US3388397A | Radio navigation receiving system utilizing agc for switchi… | Expired / Lapsed | 1966-09-28 | 1968-06-11 | 0 | Details |
| US3388377A | Method and apparatus for digital data processing | Expired / Lapsed | 1964-04-16 | 1968-06-11 | 0 | Details |
| US3388381A | Data processing means | Expired / Lapsed | 1962-12-31 | 1968-06-11 | 1 | Details |
| US3386364A | Synchronous intervalometer | Expired / Lapsed | 1965-07-19 | 1968-06-04 | 0 | Details |
| US3383686A | Diverse frequency echo detection system with doppler freque… | Expired / Lapsed | 1967-01-30 | 1968-05-14 | 0 | Details |
| US3383619A | High speed digital control system for voltage controlled os… | Expired / Lapsed | 1966-12-09 | 1968-05-14 | 0 | Details |
| US3383584A | Solid state switching regulator circuit | Expired / Lapsed | 1965-03-16 | 1968-05-14 | 0 | Details |
| US3378939A | Regulating valve for ejection seat trainer | Expired / Lapsed | 1966-07-18 | 1968-04-23 | 0 | Details |
| US3379833A | Controllable television raster generator | Expired / Lapsed | 1965-07-08 | 1968-04-23 | 2 | Details |
| US3380035A | Multiple element analog storage system | Expired / Lapsed | 1964-08-24 | 1968-04-23 | 2 | Details |
| US3374479A | Automatic false alarm control | Expired / Lapsed | 1966-03-25 | 1968-03-19 | 0 | Details |
| US3367732A | Drawer securing apparatus | Expired / Lapsed | 1967-01-20 | 1968-02-06 | 0 | Details |
| US3367299A | Underwater recovery vehicle | Expired / Lapsed | 1966-08-01 | 1968-02-06 | 2 | Details |
| US3368151A | Continuous antenna selection system | Expired / Lapsed | 1965-12-27 | 1968-02-06 | 0 | Details |
| US3368064A | Ballistic computer for low-altitude, loft-bombing systems | Expired / Lapsed | 1963-08-27 | 1968-02-06 | 0 | Details |
| US3366735A | Edge signal circuit for automatic tracking system which gen… | Expired / Lapsed | 1964-08-17 | 1968-01-30 | 0 | Details |
| US3364365A | Pulse amplitude to time conversion circuit | Expired / Lapsed | 1965-06-29 | 1968-01-16 | 0 | Details |
| US3363858A | Doppler homing system | Expired / Lapsed | 1958-09-23 | 1968-01-16 | 2 | Details |
| US2689911A | Sweep voltage generator | Expired / Lapsed | 1946-09-24 | 1954-09-21 | 0 | Details |
| US2689347A | Timing apparatus | Expired / Lapsed | 1946-04-25 | 1954-09-14 | 0 | Details |
| US2689346A | Long range navigation system | Expired / Lapsed | 1945-06-13 | 1954-09-14 | 0 | Details |
| US2688313A | Fluid pressure reciprocating motor and control valve appara… | Expired / Lapsed | 1950-03-21 | 1954-09-07 | 0 | Details |
| US2688697A | Pulse stretcher circuit | Expired / Lapsed | 1946-03-07 | 1954-09-07 | 0 | Details |
| US2686877A | Automatic frequency control system | Expired / Lapsed | 1946-03-27 | 1954-08-17 | 0 | Details |
| US2686901A | Turnstile junction for producing circularly polarized waves | Expired / Lapsed | 1945-11-05 | 1954-08-17 | 0 | Details |
| US2686284A | Antenna sector scan control circuit | Expired / Lapsed | 1945-12-27 | 1954-08-10 | 0 | Details |
| US2685671A | Apparatus for determining relationship between tube-noise a… | Expired / Lapsed | 1952-07-02 | 1954-08-03 | 0 | Details |
| US2685533A | Process of impregnating unfired inorganic body with organos… | Expired / Lapsed | 1949-06-28 | 1954-08-03 | 2 | Details |
| US2684726A | Wetting agent | Expired / Lapsed | 1949-05-27 | 1954-07-27 | 2 | Details |
| US2684448A | Controllable pulse generator | Expired / Lapsed | 1952-06-03 | 1954-07-20 | 0 | Details |
| US2684479A | Position or voltage comparator circuit | Expired / Lapsed | 1949-10-11 | 1954-07-20 | 0 | Details |
| US2683843A | Magnetic servo amplifier with direct current damping | Expired / Lapsed | 1953-07-20 | 1954-07-13 | 0 | Details |
| US2682656A | Simultaneous lobing system | Expired / Lapsed | 1946-10-03 | 1954-06-29 | 0 | Details |
| US2682001A | Radiation measuring meter | Expired / Lapsed | 1951-08-02 | 1954-06-22 | 0 | Details |
| US2681414A | Automatic frequency control circuit | Expired / Lapsed | 1946-02-01 | 1954-06-15 | 0 | Details |
| US2680210A | Triple sweep scope | Expired / Lapsed | 1945-09-18 | 1954-06-01 | 0 | Details |
| US2679617A | Multiple input coincidence circuit with paralysis feature | Expired / Lapsed | 1952-04-02 | 1954-05-25 | 0 | Details |
| US2677796A | Two-phase induction motor magnetic amplifier with direct cu… | Expired / Lapsed | 1952-03-11 | 1954-05-04 | 0 | Details |
| US2677797A | Motor control system for scanning devices | Expired / Lapsed | 1945-12-28 | 1954-05-04 | 0 | Details |
| US2677199A | Simulated scan for trainers | Expired / Lapsed | 1945-11-30 | 1954-05-04 | 0 | Details |
| US2677760A | Pulse width discriminator | Expired / Lapsed | 1945-09-17 | 1954-05-04 | 0 | Details |
| US2648038A | Antenna sector scan control | Expired / Lapsed | 1946-05-03 | 1953-08-04 | 0 | Details |
| US2646503A | Balanced sweep circuit | Expired / Lapsed | 1945-11-29 | 1953-07-21 | 0 | Details |
| US2644049A | Pressure actuated switch | Expired / Lapsed | 1951-07-18 | 1953-06-30 | 0 | Details |
| US2644124A | 400 cycle electrohydraulic steering system for guided missi… | Expired / Lapsed | 1948-01-23 | 1953-06-30 | 0 | Details |
| US2643295A | Microwave wheatstone bridge | Expired / Lapsed | 1946-09-13 | 1953-06-23 | 0 | Details |
| US2641717A | Transistor one-shot multivibrator | Expired / Lapsed | 1952-08-28 | 1953-06-09 | 0 | Details |
| US2640984A | Gating system for plan position indicators | Expired / Lapsed | 1946-04-18 | 1953-06-02 | 0 | Details |
| US2640092A | Low reactance shunt | Expired / Lapsed | 1949-11-17 | 1953-05-26 | 0 | Details |
| US2640157A | Rapid searching thermal automatic frequency control | Expired / Lapsed | 1945-11-29 | 1953-05-26 | 0 | Details |
| US2638426A | Method for heat-treating metals having difficultly reducibl… | Expired / Lapsed | 1949-11-17 | 1953-05-12 | 2 | Details |
| US2638548A | Gated oscillator circuit | Expired / Lapsed | 1945-09-18 | 1953-05-12 | 0 | Details |
| US2638571A | Stabilization of filament supply voltage | Expired / Lapsed | 1945-09-14 | 1953-05-12 | 0 | Details |
| US2599555A | Aircraft rocket launcher | Expired / Lapsed | 1946-03-11 | 1952-06-10 | 0 | Details |
| US2599964A | Stabilized frequency divider circuit | Expired / Lapsed | 1945-09-14 | 1952-06-10 | 0 | Details |
| US2599944A | Absorbent body for electromagnetic waves | Expired / Lapsed | 1943-05-11 | 1952-06-10 | 2 | Details |
| US2597214A | Pip selector | Expired / Lapsed | 1945-11-30 | 1952-05-20 | 0 | Details |
| US2595263A | Apparatus for measuring the phase shift between the input a… | Expired / Lapsed | 1946-04-12 | 1952-05-06 | 0 | Details |
| US2594535A | Multiple channel electronic switch | Expired / Lapsed | 1944-04-26 | 1952-04-29 | 0 | Details |
| US2594104A | Linear sweep circuits | Expired / Lapsed | 1943-12-16 | 1952-04-22 | 0 | Details |
| US2591846A | Parallax corrector for use in gun control | Expired / Lapsed | 1948-12-30 | 1952-04-08 | 0 | Details |
| US2591088A | Video blanking circuit | Expired / Lapsed | 1945-11-30 | 1952-04-01 | 0 | Details |
| US2589403A | Transducer construction and method | Expired / Lapsed | 1943-12-14 | 1952-03-18 | 2 | Details |
| US2586160A | Reproducing apparatus | Expired / Lapsed | 1945-10-11 | 1952-02-19 | 0 | Details |
| US2586167A | Oscillator | Expired / Lapsed | 1945-07-03 | 1952-02-19 | 0 | Details |
| US2515068A | Fuel valve | Expired / Lapsed | 1947-10-07 | 1950-07-11 | 0 | Details |
| US2515069A | Wind tunnel | Expired / Lapsed | 1946-03-18 | 1950-07-11 | 0 | Details |
| US2514297A | Apparatus for observing the conduct of a projectile in a gun | Expired / Lapsed | 1943-03-03 | 1950-07-04 | 0 | Details |
| US2485977A | Stress measuring device | Expired / Lapsed | 1946-03-11 | 1949-10-25 | 0 | Details |
| US2485847A | Combination magnetometer and gradiometer | Expired / Lapsed | 1944-09-23 | 1949-10-25 | 0 | Details |
| US2480385A | Electronic switch | Expired / Lapsed | 1945-03-20 | 1949-08-30 | 0 | Details |
| US2449035A | Smoothing servo | Expired / Lapsed | 1946-04-12 | 1948-09-07 | 0 | Details |
| US2447336A | Fluxion meter | Expired / Lapsed | 1943-11-13 | 1948-08-17 | 0 | Details |
| US2447333A | Ultra-audible sound reception | Expired / Lapsed | 1931-12-30 | 1948-08-17 | 0 | Details |
| US2445306A | Electrolyte for primary cells comprising lithium bromide | Expired / Lapsed | 1943-10-06 | 1948-07-13 | 0 | Details |
| US2438580A | Compensator for doppler effect | Expired / Lapsed | 1943-11-06 | 1948-03-30 | 0 | Details |