Thales SA
Thales SAActive Patents
0
Total Holdings
267
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| EP0461956A1 | Optical information storage on superimposed layers | Expired / Lapsed | 1991-06-04 | — | 0 | Details |
| EP0407244A1 | Process for producing planar magnetic heads by making cells… | Expired / Lapsed | 1990-06-15 | — | 0 | Details |
| EP0365431A1 | Transmitter, transmission method and receiver | Expired / Lapsed | 1989-10-20 | — | 0 | Details |
| EP0118329A2 | Velocity hydrophone | Expired / Lapsed | 1984-01-20 | — | 0 | Details |
| FR2554601A1 | Fibre-optic multiple coupler and application to an interfer… | Expired / Lapsed | 1983-11-08 | — | 0 | Details |
| FR2552397A1 | System for display of several images and its airborne use | Expired / Lapsed | 1983-09-27 | — | 0 | Details |
| EP0072287A1 | Beam forming system for omnidirectional sonars | Expired / Lapsed | 1982-07-27 | — | 0 | Details |
| FR2528647A1 | Remote monitoring system for building security - uses proce… | Expired / Lapsed | 1982-06-15 | — | 0 | Details |
| EP0046104A1 | Thermo-optical process for information recording, record ca… | Expired / Lapsed | 1981-07-28 | — | 0 | Details |
| EP0023180A1 | Interferometric device for electric current measurement usi… | Expired / Lapsed | 1980-07-18 | — | 0 | Details |
| EP0018873A1 | Compact device for optical coupling and optical-fibre inter… | Expired / Lapsed | 1980-04-14 | — | 0 | Details |
| EP0018874A1 | Optoelectric multispectral reception system with high dynam… | Expired / Lapsed | 1980-04-14 | — | 0 | Details |
| GB2003002A | Telephone transmission installation between interlocutors i… | Expired / Lapsed | 1978-08-08 | — | 0 | Details |
| DE2729866B2 | Display device for an on-board navigation system for displa… | Expired / Lapsed | 1977-07-01 | — | 0 | Details |
| GB1534093A | Photo-electric direction finder | Expired / Lapsed | 1976-10-19 | — | 0 | Details |
| DE2647209A1 | OPTOELECTRIC DETECTION SYSTEM | Expired / Lapsed | 1976-10-19 | — | 0 | Details |
| FR2355299A1 | APPARATUS INTENDED TO MEASURE A MAGNETIC FIELD | Expired / Lapsed | 1976-06-18 | — | 0 | Details |
| DE2552339A1 | DEVICE FOR REPRODUCING INFORMATION ON BOARD A VEHICLE | Expired / Lapsed | 1975-11-21 | — | 0 | Details |
| DE2504112A1 | ARRANGEMENT FOR THE AUTOMATIC GUIDANCE OF VEHICLES | Expired / Lapsed | 1975-01-31 | — | 0 | Details |
| FR2293714A1 | Opto electric system for a target angular location - uses a… | Expired / Lapsed | 1974-12-06 | — | 0 | Details |
| FR2281660A1 | DEVICE EQUIPPED WITH A FILTER GRID | Expired / Lapsed | 1974-08-09 | — | 0 | Details |
| GB1383577A | Electrical connecting device for transmitting electrical en… | Expired / Lapsed | 1972-10-02 | — | 0 | Details |
| FR2186658A1 | FR2186658A1 - - Google Patents | Expired / Lapsed | 1972-03-13 | — | 0 | Details |
| FR2172900A1 | FR2172900A1 - - Google Patents | Expired / Lapsed | 1972-02-25 | — | 0 | Details |
| GB1364975A | Spectral analysis | Expired / Lapsed | 1972-02-04 | — | 0 | Details |
| FR2118848A1 | FR2118848A1 - - Google Patents | Expired / Lapsed | 1970-12-22 | — | 0 | Details |
| GB1027017A | Simulation of conditions met by extraterrestrial satellites | Expired / Lapsed | 1964-08-13 | — | 0 | Details |
| GB673033A | Improvements in or relating to electric oscillators | Expired / Lapsed | 1950-01-16 | — | 0 | Details |
| GB520606A | Improvements in or relating to radio direction finders | Expired / Lapsed | 1938-11-15 | — | 0 | Details |
| GB520778A | Sounding devices utilising electromagnetic waves | Expired / Lapsed | 1938-09-09 | — | 0 | Details |
| GB455765A | Methods and apparatus for the location of objects by means … | Expired / Lapsed | 1936-04-15 | — | 0 | Details |
| US5532659A | Connection device to provide a connection, by coaxial cable… | Expired / Lapsed | 1995-05-15 | 1996-07-02 | 13 | Details |
| US5485009A | Laser imaging system with a linear detector array | Expired / Lapsed | 1987-08-25 | 1996-01-16 | 8 | Details |
| US5235463A | Method for the making of microlenses for optical applicatio… | Expired / Lapsed | 1991-12-02 | 1993-08-10 | 19 | Details |
| US5210534A | Encoding method for anti-collision system for sea navigation | Expired / Lapsed | 1991-04-10 | 1993-05-11 | 11 | Details |
| US5195144A | Process for estimating the distance between a stationary ob… | Expired / Lapsed | 1992-02-12 | 1993-03-16 | 7 | Details |
| US5159556A | Land navigation system displaying the position of a vehicle… | Expired / Lapsed | 1989-08-24 | 1992-10-27 | 7 | Details |
| US5043903A | System for aiding the movement of moving units in group for… | Expired / Lapsed | 1989-12-01 | 1991-08-27 | 15 | Details |
| US4965585A | Device for moving-clutter elimination in a radar | Expired / Lapsed | 1989-03-08 | 1990-10-23 | 13 | Details |
| US4928005A | Multiple-point temperature sensor using optic fibers | Expired / Lapsed | 1989-01-24 | 1990-05-22 | 7 | Details |
| US4887310A | Identification system using a laser retro-reflecting and mo… | Expired / Lapsed | 1987-07-24 | 1989-12-12 | 20 | Details |
| US4853775A | Method and device to estimate motion in a sequence of movin… | Expired / Lapsed | 1988-03-22 | 1989-08-01 | 26 | Details |
| US4789228A | Electrically controlled optical switching device | Expired / Lapsed | 1987-01-05 | 1988-12-06 | 12 | Details |
| US4743110A | Laser telemetry and Doppler measurement system with pulse c… | Expired / Lapsed | 1984-03-26 | 1988-05-10 | 11 | Details |
| US4728952A | Radar echo discriminating device | Expired / Lapsed | 1984-12-21 | 1988-03-01 | 10 | Details |
| US4652891A | Electromagnetic wave spatial filter with circular polarizat… | Expired / Lapsed | 1984-01-24 | 1987-03-24 | 2 | Details |
| US4613983A | Method for processing X-ray images | Expired / Lapsed | 1985-04-19 | 1986-09-23 | 6 | Details |
| US4604736A | Digital device for the formation of sonar channels | Expired / Lapsed | 1983-10-21 | 1986-08-05 | 16 | Details |
| US4600309A | Process and apparatus for theoptical alignment of patterns … | Expired / Lapsed | 1983-12-27 | 1986-07-15 | 12 | Details |
| US4586512A | Device for localized heating of biological tissues | Expired / Lapsed | 1985-03-27 | 1986-05-06 | 28 | Details |
| US4573054A | Excitation device for a dual band ultra-high frequency corr… | Expired / Lapsed | 1983-04-26 | 1986-02-25 | 17 | Details |
| US4563646A | Optical magnetometer using a laser coupled to a magneto-opt… | Expired / Lapsed | 1983-04-05 | 1986-01-07 | 11 | Details |
| US4562307A | Transmitter-receiver station having low power consumption f… | Expired / Lapsed | 1984-08-13 | 1985-12-31 | 4 | Details |
| US4562564A | Process and optical device for generating signals controlli… | Expired / Lapsed | 1983-03-09 | 1985-12-31 | 17 | Details |
| US4553228A | Mobile pre-etched data carrier and an optical tracking devi… | Expired / Lapsed | 1983-03-07 | 1985-11-12 | 24 | Details |
| US4550984A | Head-mounted or helmet-mounted sighting device | Expired / Lapsed | 1983-02-22 | 1985-11-05 | 11 | Details |
| US4538268A | Test-signal generating device for testing electronic equipm… | Expired / Lapsed | 1983-03-16 | 1985-08-27 | 11 | Details |
| US4505536A | Optical device for real-time amplification of the radiant e… | Expired / Lapsed | 1982-03-02 | 1985-03-19 | 18 | Details |
| US4494201A | Moving-map display with recording on photographic film | Expired / Lapsed | 1982-04-27 | 1985-01-15 | 11 | Details |
| US4492468A | Interferometer for the real time display of deformations of… | Expired / Lapsed | 1981-11-16 | 1985-01-08 | 11 | Details |
| US4489331A | Two-band microwave antenna with nested horns for feeding a … | Expired / Lapsed | 1982-01-21 | 1984-12-18 | 10 | Details |
| US4482248A | Interferometer with a tunable optical resonator incorporati… | Expired / Lapsed | 1983-02-17 | 1984-11-13 | 8 | Details |
| US4456982A | Imaging system with multiple, simultaneous transmissions | Expired / Lapsed | 1981-10-08 | 1984-06-26 | 24 | Details |
| US4449193A | Bidimensional correlation device | Expired / Lapsed | 1981-04-23 | 1984-05-15 | 8 | Details |
| US4420564A | Blood sugar analyzer having fixed enzyme membrane sensor | Expired / Lapsed | 1981-11-04 | 1983-12-13 | 20 | Details |
| US4419599A | Piezoelectric transducer made from a polymer material and p… | Expired / Lapsed | 1982-04-21 | 1983-12-06 | 5 | Details |
| US4415922A | Cartographic indicator | Expired / Lapsed | 1980-08-01 | 1983-11-15 | 5 | Details |
| US4411057A | Method of manufacturing a laser source with stamped support | Expired / Lapsed | 1981-10-20 | 1983-10-25 | 4 | Details |
| US4404656A | Thermo-optical data writing process and data medium for per… | Expired / Lapsed | 1981-01-21 | 1983-09-13 | 23 | Details |
| US4403311A | Acoustic imaging system | Expired / Lapsed | 1981-03-17 | 1983-09-06 | 5 | Details |
| US4402086A | Safety device for extra-high voltage generator, particularl… | Expired / Lapsed | 1981-02-25 | 1983-08-30 | 9 | Details |
| US4398203A | Thermo-optical method for writing information and an inform… | Expired / Lapsed | 1981-08-07 | 1983-08-09 | 25 | Details |
| US4396885A | Device applicable to direction finding for measuring the re… | Expired / Lapsed | 1980-06-03 | 1983-08-02 | 4 | Details |
| US4396247A | Method for fitting an optical fiber into an end fitting, th… | Expired / Lapsed | 1980-06-03 | 1983-08-02 | 14 | Details |
| US4387452A | Optical device for the recording and reading of data media … | Expired / Lapsed | 1981-01-21 | 1983-06-07 | 20 | Details |
| US4380068A | Test unit for a high-rate multitrack digital recorder | Expired / Lapsed | 1981-01-19 | 1983-04-12 | 9 | Details |
| US4370026A | Illuminating device for providing an illumination beam with… | Expired / Lapsed | 1980-09-08 | 1983-01-25 | 4 | Details |
| US4370612A | Interferometric optical fiber electric current measuring de… | Expired / Lapsed | 1980-07-23 | 1983-01-25 | 11 | Details |
| US4369391A | Pressure-sensing transducer device having a piezoelectric p… | Expired / Lapsed | 1980-06-11 | 1983-01-18 | 8 | Details |
| US4360895A | Permanent memory structure with thermo-optical writing and … | Expired / Lapsed | 1981-01-27 | 1982-11-23 | 8 | Details |
| US4349838A | Laser target designator system | Expired / Lapsed | 1981-01-28 | 1982-09-14 | 7 | Details |
| US4345359A | Process for manufacturing a piezoelectric transducer made f… | Expired / Lapsed | 1980-08-18 | 1982-08-24 | 4 | Details |
| US4340272A | Light intensity modulator in an integrated optical circuit … | Expired / Lapsed | 1980-04-02 | 1982-07-20 | 12 | Details |
| US4326771A | Method of coupling between an optical fiber and an optoelec… | Expired / Lapsed | 1980-10-02 | 1982-04-27 | 11 | Details |
| US4327153A | Composite piezoelectric material in the form of a film and … | Expired / Lapsed | 1980-09-15 | 1982-04-27 | 9 | Details |
| US4325083A | High dynamics multispectral opto-electrical receiver system | Expired / Lapsed | 1980-04-30 | 1982-04-13 | 6 | Details |
| US4320716A | Ultra-high frequency device for depositing thin films on so… | Expired / Lapsed | 1980-05-16 | 1982-03-23 | 12 | Details |
| US4320475A | Monomodal optical fibre hydrophone operating by the elastoo… | Expired / Lapsed | 1980-06-26 | 1982-03-16 | 6 | Details |
| US4298876A | Polarizer for microwave antenna | Expired / Lapsed | 1980-02-25 | 1981-11-03 | 12 | Details |
| US4288785A | Light intensity modulator with digital control and a digita… | Expired / Lapsed | 1980-05-20 | 1981-09-08 | 9 | Details |
| EP0010998B1 | Process for optically aligning patterns in two planes close… | Expired / Lapsed | 1979-09-05 | 1981-09-02 | 14 | Details |
| US4284921A | Polymeric piezoelectric transducer with thermoformed protub… | Expired / Lapsed | 1978-11-15 | 1981-08-18 | 10 | Details |
| US4284324A | Acousto-optical imagery system based on coherent holographi… | Expired / Lapsed | 1978-06-20 | 1981-08-18 | 6 | Details |
| US4272589A | Process for gluing two members using a photopolymerizable s… | Expired / Lapsed | 1979-12-12 | 1981-06-09 | 17 | Details |
| US4265541A | Interferometric laser gyrometer | Expired / Lapsed | 1978-11-17 | 1981-05-05 | 14 | Details |
| US4262366A | Signal-transmitting system including an optical limb with a… | Expired / Lapsed | 1979-04-06 | 1981-04-14 | 7 | Details |
| US4253115A | Process for the transmission of an audiofrequency analog si… | Expired / Lapsed | 1979-10-01 | 1981-02-24 | 14 | Details |
| US4244030A | Multiplexed filtering device | Expired / Lapsed | 1978-11-27 | 1981-01-06 | 6 | Details |
| US4241353A | Multimode monopulse feed and antenna incorporating same | Expired / Lapsed | 1979-02-21 | 1980-12-23 | 10 | Details |
| US4236783A | Electrically-controlled optical branch connection | Expired / Lapsed | 1978-12-05 | 1980-12-02 | 14 | Details |
| US4236785A | Non linear thin layer optical device | Expired / Lapsed | 1978-03-14 | 1980-12-02 | 9 | Details |
| US4225215A | Display instrument using optical collimation | Expired / Lapsed | 1978-04-28 | 1980-09-30 | 11 | Details |
| US4223977A | Integrated optical demultiplexing circuit | Expired / Lapsed | 1979-04-19 | 1980-09-23 | 8 | Details |
| US4224507A | System for tracking a moving target with respect to a frame… | Expired / Lapsed | 1978-10-17 | 1980-09-23 | 21 | Details |
| US4217564A | Elastic surface wave device for treating high frequency sig… | Expired / Lapsed | 1978-09-15 | 1980-08-12 | 13 | Details |
| US4209254A | System for monitoring the movements of one or more point so… | Expired / Lapsed | 1979-02-01 | 1980-06-24 | 14 | Details |
| US4201986A | Continuous wave radar equipment | Expired / Lapsed | 1978-11-03 | 1980-05-06 | 15 | Details |
| US4196974A | Smectic liquid crystal display cell | Expired / Lapsed | 1977-11-29 | 1980-04-08 | 7 | Details |
| US4193689A | Arrangement for locating radiaring sources | Expired / Lapsed | 1978-07-25 | 1980-03-18 | 9 | Details |
| US4193473A | Refractive stigmatic system for elastic surface waves | Expired / Lapsed | 1977-07-07 | 1980-03-18 | 10 | Details |
| US4183022A | Transponder for radiocommunication system, particularly for… | Expired / Lapsed | 1977-06-02 | 1980-01-08 | 6 | Details |
| US4175285A | Navigational system of high-speed aircraft | Expired / Lapsed | 1967-08-25 | 1979-11-20 | 18 | Details |
| US4151595A | System for controlling ground movements on airfields | Expired / Lapsed | 1977-10-14 | 1979-04-24 | 7 | Details |
| US4148026A | System for tracking a moving target | Expired / Lapsed | 1978-01-17 | 1979-04-03 | 24 | Details |
| US4145675A | Charged-coupled device filter | Expired / Lapsed | 1977-06-17 | 1979-03-20 | 6 | Details |
| US4144566A | Parallel-type processor with a stack of auxiliary fast memo… | Expired / Lapsed | 1977-08-11 | 1979-03-13 | 10 | Details |
| US4138726A | Airborne arrangement for displaying a moving map | Expired / Lapsed | 1977-06-29 | 1979-02-06 | 13 | Details |
| US4133601A | Optical fibers bundle positioning ferrule | Expired / Lapsed | 1976-11-22 | 1979-01-09 | 22 | Details |
| US4112367A | Magnetomer using a thin magnetic film optical waveguide wit… | Expired / Lapsed | 1977-06-14 | 1978-09-05 | 8 | Details |
| US4107854A | Training system for simulating an animated scene | Expired / Lapsed | 1977-04-19 | 1978-08-22 | 5 | Details |
| US4103300A | Air navigation and landing aid system | Expired / Lapsed | 1974-12-13 | 1978-07-25 | 19 | Details |
| US4070584A | Object-identification system with sequentially activated ph… | Expired / Lapsed | 1975-12-17 | 1978-01-24 | 12 | Details |
| US4063795A | Electro-optic holographic storage device having unlimited r… | Expired / Lapsed | 1976-05-18 | 1977-12-20 | 6 | Details |
| US4059804A | Frequency comparison circuit | Expired / Lapsed | 1976-11-19 | 1977-11-22 | 6 | Details |
| US4049961A | Automatic guidance system for moving objects | Expired / Lapsed | 1975-01-30 | 1977-09-20 | 14 | Details |
| US4040047A | Erasable thermo-optic storage display of a transmitted image | Expired / Lapsed | 1975-06-10 | 1977-08-02 | 16 | Details |
| US4028531A | System for displaying information aboard a moving object | Expired / Lapsed | 1975-11-20 | 1977-06-07 | 14 | Details |
| US4006627A | High-speed ultrasonic echo-tomographic device | Expired / Lapsed | 1975-10-08 | 1977-02-08 | 7 | Details |
| US4006447A | Audibility-control system for radio receiver | Expired / Lapsed | 1974-06-12 | 1977-02-01 | 22 | Details |
| US3962673A | System for reading acoustic images | Expired / Lapsed | 1974-10-29 | 1976-06-08 | 7 | Details |
| US3953727A | System for transmitting independent communication channels … | Expired / Lapsed | 1975-01-17 | 1976-04-27 | 11 | Details |
| US3936139A | Holographic memory providing both angular and translational… | Expired / Lapsed | 1973-09-07 | 1976-02-03 | 5 | Details |
| US3909608A | Reproducing device for the optical reading out of a record … | Expired / Lapsed | 1973-12-18 | 1975-09-30 | 4 | Details |
| US3908136A | Analogue gates | Expired / Lapsed | 1974-05-02 | 1975-09-23 | 7 | Details |
| US3900873A | Installation for measurement by radio-electric transmission… | Expired / Lapsed | 1973-07-30 | 1975-08-19 | 5 | Details |
| US3889261A | Range measurement pulse radar system | Expired / Lapsed | 1973-09-20 | 1975-06-10 | 9 | Details |
| US3886306A | Sighting apparatus for helicopters | Expired / Lapsed | 1973-08-17 | 1975-05-27 | 7 | Details |
| US3886515A | Automatic vehicle-monitoring system | Expired / Lapsed | 1973-05-24 | 1975-05-27 | 16 | Details |
| US3843910A | Cooling system for components generating large amounts of h… | Expired / Lapsed | 1972-10-10 | 1974-10-22 | 14 | Details |
| US3835448A | Multibeam steering system for a circular section acoustic t… | Expired / Lapsed | 1973-04-19 | 1974-09-10 | 6 | Details |
| US3829684A | Liquid crystal image converter system responsive to ionizin… | Expired / Lapsed | 1973-04-19 | 1974-08-13 | 12 | Details |
| US3820021A | System for determining the presence of a given frequency in… | Expired / Lapsed | 1973-04-09 | 1974-06-25 | 10 | Details |
| US3814847A | Television signal processing device | Expired / Lapsed | 1971-12-27 | 1974-06-04 | 6 | Details |
| US3803408A | Image converter | Expired / Lapsed | 1973-01-15 | 1974-04-09 | 4 | Details |
| US3797020A | Microwave antenna structure with aperture blocking eliminat… | Expired / Lapsed | 1972-09-05 | 1974-03-12 | 12 | Details |
| US3785717A | Stepped integrated waveguide structure with directional cou… | Expired / Lapsed | 1972-08-10 | 1974-01-15 | 10 | Details |
| US3783419A | Resonator for gyromagnetic-resonance spectrometer | Expired / Lapsed | 1972-05-12 | 1974-01-01 | 6 | Details |
| US3775599A | Landing aid system | Expired / Lapsed | 1972-02-02 | 1973-11-27 | 18 | Details |
| US3775766A | Independent landing monitoring pulse radar system | Expired / Lapsed | 1972-01-11 | 1973-11-27 | 9 | Details |
| US3774043A | Camera system utilising a pyroelectric target | Expired / Lapsed | 1972-04-12 | 1973-11-20 | 6 | Details |
| US3770870A | Turret device for positioning crucibles in ion sources | Expired / Lapsed | 1972-12-22 | 1973-11-06 | 6 | Details |
| US3764980A | Symbol recognition system particularly for alpha-numeric ch… | Expired / Lapsed | 1971-09-22 | 1973-10-09 | 7 | Details |
| US3720865A | Brushless d.c. motor | Expired / Lapsed | 1972-03-24 | 1973-03-13 | 9 | Details |
| US3720880A | Power amplifying device for amplitude modulated high freque… | Expired / Lapsed | 1971-10-13 | 1973-03-13 | 4 | Details |
| US3716836A | Data code conversion for remote signalling and control syst… | Expired / Lapsed | 1971-05-14 | 1973-02-13 | 0 | Details |
| US3705955A | Blind landing aid systems | Expired / Lapsed | 1970-01-09 | 1972-12-12 | 0 | Details |
| US3703640A | Signal spectral multiplexing system | Expired / Lapsed | 1969-12-08 | 1972-11-21 | 29 | Details |
| FR2129053A5 | FR2129053A5 - - Google Patents | Expired / Lapsed | 1971-03-12 | 1972-10-27 | 0 | Details |
| US3700806A | Key generators for cryptographic devices | Expired / Lapsed | 1967-09-18 | 1972-10-24 | 6 | Details |
| US3688311A | Parabolic antennas | Expired / Lapsed | 1964-08-19 | 1972-08-29 | 6 | Details |
| US3671963A | Blind landing aids | Expired / Lapsed | 1969-12-19 | 1972-06-20 | 7 | Details |
| US3663086A | Optical information storing system | Expired / Lapsed | 1970-06-23 | 1972-05-16 | 5 | Details |
| US3657738A | Radar systems | Expired / Lapsed | 1969-12-05 | 1972-04-18 | 13 | Details |
| US3644889A | Symbol recognition system particularly for alphanumeric cha… | Expired / Lapsed | 1970-04-23 | 1972-02-22 | 6 | Details |
| US3617545A | Removing urea from saline water solutions particularly in a… | Expired / Lapsed | 1970-03-12 | 1971-11-02 | 11 | Details |
| US3577144A | Distance measuring systems | Expired / Lapsed | 1968-10-10 | 1971-05-04 | 5 | Details |
| FR2038843A5 | Aortic valve support | Expired / Lapsed | 1969-03-31 | 1971-01-08 | 0 | Details |
| US3551034A | Wave compression device | Expired / Lapsed | 1965-06-03 | 1970-12-29 | 0 | Details |
| US3514779A | Antennae with focusing devices | Expired / Lapsed | 1967-02-13 | 1970-05-26 | 0 | Details |
| US3492861A | Strain gauge arrangement | Expired / Lapsed | 1968-03-07 | 1970-02-03 | 0 | Details |
| US3461340A | Image-translating device | Expired / Lapsed | 1965-01-27 | 1969-08-12 | 0 | Details |
| US3440640A | Slow rate pulse counters | Expired / Lapsed | 1965-09-07 | 1969-04-22 | 0 | Details |
| US3423682A | Receiver systems with constant false alarm rate | Expired / Lapsed | 1968-01-30 | 1969-01-21 | 0 | Details |
| US3398918A | Optical system for guiding a projectile | Expired / Lapsed | 1966-12-05 | 1968-08-27 | 0 | Details |
| US3391560A | Electroacoustic vibrator measuring system | Expired / Lapsed | 1965-12-10 | 1968-07-09 | 0 | Details |
| US3371342A | Filtering device | Expired / Lapsed | 1967-01-17 | 1968-02-27 | 0 | Details |
| US3358288A | Wide band spiral antenna with reflective cavities of varied… | Expired / Lapsed | 1964-06-26 | 1967-12-12 | 0 | Details |
| US3355935A | Semiconductor systems for measuring streeses | Expired / Lapsed | 1963-07-24 | 1967-12-05 | 2 | Details |
| US3333206A | Stable traveling wave amplifier for pulsed lasers | Expired / Lapsed | 1965-03-19 | 1967-07-25 | 2 | Details |
| US3332083A | Cassegrain antenna with offset feed | Expired / Lapsed | 1964-05-25 | 1967-07-18 | 2 | Details |
| US3324341A | High power electron tube with multiple locked-in magnetron … | Expired / Lapsed | 1961-11-14 | 1967-06-06 | 2 | Details |
| US3257246A | Methods for manufacturing semiconductor devices | Expired / Lapsed | 1962-07-09 | 1966-06-21 | 2 | Details |
| US3250855A | Electrical generators of quasi random digits | Expired / Lapsed | 1962-05-23 | 1966-05-10 | 2 | Details |
| US3245076A | Automatic pilotage system for an aircraft or missile | Expired / Lapsed | 1963-05-14 | 1966-04-05 | 2 | Details |
| US3223943A | Local oscillator controlling systems using quantizing means | Expired / Lapsed | 1962-06-21 | 1965-12-14 | 2 | Details |
| US3212521A | Air-protection device | Expired / Lapsed | 1963-04-19 | 1965-10-19 | 2 | Details |
| US3202994A | Systems for determining the elevation angle and azimuth of … | Expired / Lapsed | 1962-07-26 | 1965-08-24 | 2 | Details |
| US3170033A | Electrical generators of quasi-random symbols | Expired / Lapsed | 1961-07-27 | 1965-02-16 | 2 | Details |
| US3160813A | Tropospheric radio communication system | Expired / Lapsed | 1960-06-17 | 1964-12-08 | 2 | Details |
| FR1344337A | Resolver coding system | Expired / Lapsed | 1962-09-28 | 1963-11-29 | 0 | Details |
| US3031596A | Device for separating electrons in accordance with their en… | Expired / Lapsed | 1959-03-09 | 1962-04-24 | 0 | Details |
| US3031659A | Moving target indicating system | Expired / Lapsed | 1958-04-09 | 1962-04-24 | 0 | Details |
| US3013161A | Non linear semiconductor element | Expired / Lapsed | 1958-11-03 | 1961-12-12 | 0 | Details |
| US3001115A | Linear motor system | Expired / Lapsed | 1958-12-31 | 1961-09-19 | 0 | Details |
| US2962605A | Junction transistor devices having zones of different resis… | Expired / Lapsed | 1958-01-13 | 1960-11-29 | 0 | Details |
| US2951173A | Traveling wave tube oscillators | Expired / Lapsed | 1958-03-24 | 1960-08-30 | 0 | Details |
| US2925595A | Monopulse transmitting and receiving systems | Expired / Lapsed | 1956-09-11 | 1960-02-16 | 0 | Details |
| US2891160A | Semi-conductor oscillators | Expired / Lapsed | 1957-01-02 | 1959-06-16 | 0 | Details |
| US2888598A | Delay lines | Expired / Lapsed | 1956-01-03 | 1959-05-26 | 0 | Details |
| US2870444A | Radiating systems | Expired / Lapsed | 1955-11-15 | 1959-01-20 | 0 | Details |
| US2863144A | Devices for varying the direction of an electromagnetic wav… | Expired / Lapsed | 1957-07-01 | 1958-12-02 | 0 | Details |
| US2863088A | Electron signal storage tubes | Expired / Lapsed | 1953-04-06 | 1958-12-02 | 0 | Details |
| FR1166596A | Vehicle air conditioning system | Expired / Lapsed | 1957-01-23 | 1958-11-13 | 0 | Details |
| US2849643A | Double beam electron discharge tube | Expired / Lapsed | 1956-01-11 | 1958-08-26 | 0 | Details |
| US2827588A | Travelling wave discharge tube arrangements utilizing delay… | Expired / Lapsed | 1952-04-17 | 1958-03-18 | 0 | Details |
| US2820898A | Distance measuring equipment utilizing frequency modulation | Expired / Lapsed | 1954-06-22 | 1958-01-21 | 0 | Details |
| US2820221A | Directional aerials | Expired / Lapsed | 1955-09-13 | 1958-01-14 | 0 | Details |
| US2807800A | High frequency directional aerials | Expired / Lapsed | 1955-09-13 | 1957-09-24 | 0 | Details |
| FR1131866A | Sets of electrical elements joined by connections | Expired / Lapsed | 1955-02-08 | 1957-02-28 | 0 | Details |
| US2777975A | Cooling device for semi-conducting elements | Expired / Lapsed | 1955-07-01 | 1957-01-15 | 0 | Details |
| US2776898A | Ceramic dielectric with high dielectric constant and proces… | Expired / Lapsed | 1953-06-17 | 1957-01-08 | 2 | Details |
| FR1123405A | Power supply device for fluorescent tubes | Expired / Lapsed | 1955-03-11 | 1956-09-21 | 0 | Details |
| US2763860A | Hertzian optics | Expired / Lapsed | 1950-11-24 | 1956-09-18 | 0 | Details |
| FR1114607A | Antenna operating simultaneously in two different frequency… | Expired / Lapsed | 1954-11-18 | 1956-04-16 | 0 | Details |
| US2720609A | Progressive wave tubes | Expired / Lapsed | 1949-02-03 | 1955-10-11 | 0 | Details |
| US2702370A | Pulse-modulated traveling wave tube with crossed electric a… | Expired / Lapsed | 1954-03-16 | 1955-02-15 | 0 | Details |
| US2695929A | Traveling wave tube having transverse magnetic and electros… | Expired / Lapsed | 1952-03-22 | 1954-11-30 | 0 | Details |
| US2695995A | Radar with combined amplitude and frequency modulation to e… | Expired / Lapsed | 1951-12-12 | 1954-11-30 | 0 | Details |
| US2687777A | Thermionic tube for ultrashort waves | Expired / Lapsed | 1949-07-02 | 1954-08-31 | 0 | Details |
| FR1059648A | Ceramic material with high specific inductance and manufact… | Expired / Lapsed | 1952-07-10 | 1954-03-26 | 0 | Details |
| FR58105E | Improvements to the process for producing cathodes for elec… | Expired / Lapsed | 1948-03-22 | 1953-09-21 | 0 | Details |
| FR1027177A | Improvements in electronic measurement of time intervals | Expired / Lapsed | 1950-11-03 | 1953-05-08 | 0 | Details |
| US2617153A | Manufacture of silica membranes | Expired / Lapsed | 1949-07-13 | 1952-11-11 | 2 | Details |
| US2607904A | Electron optical system for cathodes of electron beam tubes | Expired / Lapsed | 1949-10-11 | 1952-08-19 | 0 | Details |
| US2600463A | Method for correcting electronic optical systems | Expired / Lapsed | 1948-12-24 | 1952-06-17 | 0 | Details |
| FR1004622A | Improvements to very high frequency devices with dielectric… | Expired / Lapsed | 1949-12-21 | 1952-04-01 | 0 | Details |
| FR998731A | Junction bar | Expired / Lapsed | 1949-10-06 | 1952-01-22 | 0 | Details |
| US2582768A | Frequency transposing device | Expired / Lapsed | 1946-03-29 | 1952-01-15 | 0 | Details |
| US2580007A | Amplifying and oscillating tube with traveling wave control | Expired / Lapsed | 1948-03-25 | 1951-12-25 | 0 | Details |
| US2560859A | Method for modulating the highfrequency energy transmitted … | Expired / Lapsed | 1947-04-11 | 1951-07-17 | 0 | Details |
| FR979577A | Improvements to dielectric, magnetic or electromagnetic los… | Expired / Lapsed | 1948-12-03 | 1951-04-27 | 0 | Details |
| US2547159A | Device for stabilizing the frequency of an ultra short wave… | Expired / Lapsed | 1946-08-27 | 1951-04-03 | 0 | Details |
| US2546742A | High-frequency electrical filter for use in wave guides | Expired / Lapsed | 1947-04-11 | 1951-03-27 | 0 | Details |
| US2520760A | Method of producing cathodes for electronic tubes | Expired / Lapsed | 1947-04-09 | 1950-08-29 | 1 | Details |
| US2513478A | Means for obtaining emission impulses of constant width and… | Expired / Lapsed | 1947-05-02 | 1950-07-04 | 0 | Details |
| US2506660A | Device for the regulation and centering under vacuum of a f… | Expired / Lapsed | 1947-05-16 | 1950-05-09 | 0 | Details |
| FR932140A | Pulse transmission method and system | Expired / Lapsed | 1946-08-10 | 1948-03-12 | 0 | Details |
| FR928119A | System for hooking up and positioning the removable compone… | Expired / Lapsed | 1946-05-09 | 1947-11-19 | 0 | Details |
| US2275930A | Call selector | Expired / Lapsed | 1939-03-09 | 1942-03-10 | 0 | Details |
| US2271915A | Radio receiver circuit | Expired / Lapsed | 1939-11-04 | 1942-02-03 | 0 | Details |
| US2257815A | Radio beacon | Expired / Lapsed | 1938-03-30 | 1941-10-07 | 0 | Details |
| US2252062A | Communication system using modulated waves | Expired / Lapsed | 1938-07-23 | 1941-08-12 | 0 | Details |
| US2228869A | Dephasing or phase-shifter circuit | Expired / Lapsed | 1939-02-21 | 1941-01-14 | 0 | Details |
| US2208422A | Pulse phasing apparatus | Expired / Lapsed | 1938-12-09 | 1940-07-16 | 0 | Details |
| US2206644A | Radio beacon and radio guide | Expired / Lapsed | 1938-04-30 | 1940-07-02 | 0 | Details |
| FR856256A | Electro-magnetic and similar wave direction indicating devi… | Expired / Lapsed | 1939-02-17 | 1940-06-10 | 0 | Details |
| FR856241A | Electric cables for high frequencies | Expired / Lapsed | 1939-02-07 | 1940-06-07 | 0 | Details |
| FR852150A | Improvements in devices used for the transformation of mech… | Expired / Lapsed | 1939-03-27 | 1940-01-24 | 0 | Details |
| US2176469A | Steering device responsive to radio signals | Expired / Lapsed | 1937-01-16 | 1939-10-17 | 0 | Details |
| US2173154A | Telecontrol system | Expired / Lapsed | 1935-11-01 | 1939-09-19 | 0 | Details |
| US2153612A | Demodulating means | Expired / Lapsed | 1937-06-18 | 1939-04-11 | 0 | Details |
| FR837918A | Device for the continuous detection of the variation of opa… | Expired / Lapsed | 1937-10-15 | 1939-02-23 | 0 | Details |
| FR49159E | Improvements to signaling systems | Expired / Lapsed | 1937-07-05 | 1938-11-28 | 0 | Details |
| FR833929A | Improvements to signaling systems | Expired / Lapsed | 1937-06-18 | 1938-11-04 | 0 | Details |
| US2135171A | Wave demodulating means | Expired / Lapsed | 1935-02-12 | 1938-11-01 | 0 | Details |
| FR832946A | Apparatus for indicating or measuring the intensity or othe… | Expired / Lapsed | 1937-05-29 | 1938-10-06 | 0 | Details |
| US2131164A | Remote selective control system | Expired / Lapsed | 1935-11-22 | 1938-09-27 | 0 | Details |
| US2115877A | Electronic oscillator tube | Expired / Lapsed | 1935-11-15 | 1938-05-03 | 0 | Details |
| US2098227A | Telegraphy system with position indicators | Expired / Lapsed | 1934-02-20 | 1937-11-09 | 0 | Details |
| US2088548A | Gas discharge relay | Expired / Lapsed | 1935-09-26 | 1937-07-27 | 0 | Details |
| FR812975A | Improvements in obstacle detection by electromagnetic waves | Expired / Lapsed | 1936-01-29 | 1937-05-21 | 0 | Details |
| US2076264A | Phase and frequency control of oscillations | Expired / Lapsed | 1932-01-08 | 1937-04-06 | 0 | Details |
| US2073333A | Telegraph system | Expired / Lapsed | 1934-05-09 | 1937-03-09 | 0 | Details |
| FR797172A | Improvements to electrical signaling systems | Expired / Lapsed | 1935-01-21 | 1936-04-22 | 0 | Details |
| US2006440A | Vacuum tube generator system | Expired / Lapsed | 1930-01-25 | 1935-07-02 | 0 | Details |
| US1949263A | Transmitter supply source | Expired / Lapsed | 1930-07-16 | 1934-02-27 | 0 | Details |
| US1946274A | Method of signaling | Expired / Lapsed | 1931-03-05 | 1934-02-06 | 0 | Details |