Lanteris Space LLC
Lanteris SActive Patents
0
Total Holdings
300
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| EP0282298A3 | Method and apparatus for combining encoding and modulation | Expired / Lapsed | 1988-03-10 | — | 0 | Details |
| DE2458387A1 | VEHICLE SPEED CONTROL AND - REGULATORY SYSTEM | Expired / Lapsed | 1974-12-10 | — | 0 | Details |
| GB744535A | Method of and means for measuring distance | Expired / Lapsed | 1953-02-06 | — | 0 | Details |
| DE2900124C2 | Electric lamp | Expired / Lapsed | 1979-01-03 | 1982-05-06 | 0 | Details |
| US3926527A | Rotating gas correlation cell | Expired / Lapsed | 1974-06-05 | 1975-12-16 | 8 | Details |
| US3901597A | Laser distance measuring device | Expired / Lapsed | 1973-09-13 | 1975-08-26 | 13 | Details |
| US3885644A | Variable gain vehicle speed control system | Expired / Lapsed | 1973-12-10 | 1975-05-27 | 3 | Details |
| US3863064A | Differential retrocommunicator | Expired / Lapsed | 1972-01-03 | 1975-01-28 | 12 | Details |
| US3842421A | Multiple band frequency selective reflectors | Expired / Lapsed | 1973-02-15 | 1974-10-15 | 12 | Details |
| US3720876A | Touch-button actuated electronic latching device with means… | Expired / Lapsed | 1971-04-28 | 1973-03-13 | 9 | Details |
| US3696203A | Adaptive modem receiver | Expired / Lapsed | 1970-06-03 | 1972-10-03 | 5 | Details |
| US3649821A | Digital multiple-tone generator | Expired / Lapsed | 1970-06-15 | 1972-03-14 | 10 | Details |
| US3628565A | Flexible check valves | Expired / Lapsed | 1970-03-03 | 1971-12-21 | 9 | Details |
| US3603738A | Time-domain pitch detector and circuits for extracting a si… | Expired / Lapsed | 1969-07-07 | 1971-09-07 | 12 | Details |
| US3576478A | Igfet comprising n-type silicon substrate, silicon oxide ga… | Expired / Lapsed | 1969-07-22 | 1971-04-27 | 6 | Details |
| US3512016A | High speed non-saturating switching circuit | Expired / Lapsed | 1966-03-15 | 1970-05-12 | 0 | Details |
| US3506362A | Laser system which indicates the angular position of an opt… | Expired / Lapsed | 1966-11-18 | 1970-04-14 | 0 | Details |
| US3498692A | Light pen | Expired / Lapsed | 1967-11-09 | 1970-03-03 | 0 | Details |
| US3493769A | System,including pulse shape discriminator for detecting fl… | Expired / Lapsed | 1966-02-15 | 1970-02-03 | 0 | Details |
| US3486223A | Solder bonding | Expired / Lapsed | 1967-04-27 | 1969-12-30 | 0 | Details |
| US3482251A | Transceive and tracking antenna horn array | Expired / Lapsed | 1967-05-19 | 1969-12-02 | 0 | Details |
| US3477726A | Changer mechanism for record tape cartridge | Expired / Lapsed | 1968-05-23 | 1969-11-11 | 0 | Details |
| US3474439A | Character and decimal point generator | Expired / Lapsed | 1966-10-18 | 1969-10-21 | 0 | Details |
| US3473031A | Laser transmitter for generation of simultaneous frequency … | Expired / Lapsed | 1965-06-23 | 1969-10-14 | 0 | Details |
| US3454785A | Shift register employing insulated gate field effect transi… | Expired / Lapsed | 1964-07-27 | 1969-07-08 | 2 | Details |
| US3453601A | Two speed arithmetic calculator | Expired / Lapsed | 1966-10-18 | 1969-07-01 | 0 | Details |
| US3412333A | Apparatus for sequentially testing electrical components un… | Expired / Lapsed | 1965-11-15 | 1968-11-19 | 0 | Details |
| US3388386A | Tunnel diode memory system | Expired / Lapsed | 1965-10-22 | 1968-06-11 | 2 | Details |
| US3384892A | Interrogator-responder signalling system | Expired / Lapsed | 1966-11-07 | 1968-05-21 | 0 | Details |
| US3381182A | Microcircuits having buried conductive layers | Expired / Lapsed | 1964-10-19 | 1968-04-30 | 0 | Details |
| US3376387A | Fundamental frequency extractor for voice signals | Expired / Lapsed | 1964-05-15 | 1968-04-02 | 0 | Details |
| US3376411A | Automatic rangefinder | Expired / Lapsed | 1963-07-23 | 1968-04-02 | 0 | Details |
| US3374537A | Method of connecting leads to a semiconductive device | Expired / Lapsed | 1965-03-22 | 1968-03-26 | 0 | Details |
| US3372230A | Temperature scanning apparatus | Expired / Lapsed | 1965-03-31 | 1968-03-05 | 0 | Details |
| US3355599A | Long time constant monostable multivibrator | Expired / Lapsed | 1964-12-02 | 1967-11-28 | 2 | Details |
| US3352726A | Method of fabricating planar semiconductor devices | Expired / Lapsed | 1964-04-13 | 1967-11-14 | 2 | Details |
| US3346689A | Multilayer circuit board suing epoxy cards and silver epoxy… | Expired / Lapsed | 1965-01-29 | 1967-10-10 | 2 | Details |
| US3344353A | Error free data transmission system | Expired / Lapsed | 1963-12-24 | 1967-09-26 | 2 | Details |
| US3340950A | Motor and motor vehicle speed maintaining system using reco… | Expired / Lapsed | 1965-04-08 | 1967-09-12 | 2 | Details |
| US3340602A | Process for sealing | Expired / Lapsed | 1965-02-01 | 1967-09-12 | 1 | Details |
| US3331994A | Method of coating semiconductor with tungsten-containing gl… | Expired / Lapsed | 1963-09-26 | 1967-07-18 | 2 | Details |
| US3290565A | Glass enclosed, passivated semiconductor with contact means… | Expired / Lapsed | 1963-10-24 | 1966-12-06 | 1 | Details |
| US3287628A | Variable phase shifter having greater than 180 u deg. range… | Expired / Lapsed | 1963-11-22 | 1966-11-22 | 2 | Details |
| US3283218A | High frequency diode having semiconductive mesa | Expired / Lapsed | 1964-04-03 | 1966-11-01 | 0 | Details |
| US3271675A | Phase detector and automatic apparatus utilizing said phase… | Expired / Lapsed | 1962-12-13 | 1966-09-06 | 2 | Details |
| US3256588A | Method of fabricating thin film r-c circuits on single subs… | Expired / Lapsed | 1962-10-23 | 1966-06-21 | 4 | Details |
| US3248552A | Photosensitive optical logic unit for use in a computer sys… | Expired / Lapsed | 1962-09-25 | 1966-04-26 | 1 | Details |
| US3242395A | Semiconductor device having low capacitance junction | Expired / Lapsed | 1961-01-12 | 1966-03-22 | 2 | Details |
| US3241135A | Aperiodic pulse code modulator or analog to digital convert… | Expired / Lapsed | 1963-03-04 | 1966-03-15 | 2 | Details |
| US3235797A | Record controlled test set and magazine therefor having fra… | Expired / Lapsed | 1961-04-03 | 1966-02-15 | 1 | Details |
| US3233475A | Antenna structure | Expired / Lapsed | 1963-07-23 | 1966-02-08 | 2 | Details |
| US3231860A | Character position detection and correction system | Expired / Lapsed | 1962-01-15 | 1966-01-25 | 2 | Details |
| US3217269A | Crystal controlled multivibrator | Expired / Lapsed | 1962-05-04 | 1965-11-09 | 2 | Details |
| US3216005A | Analog voltage translating apparatus | Expired / Lapsed | 1962-02-23 | 1965-11-02 | 1 | Details |
| US3206339A | Method of growing geometricallydefined epitaxial layer with… | Expired / Lapsed | 1963-09-30 | 1965-09-14 | 2 | Details |
| US3205303A | Remotely controlled remote viewing system | Expired / Lapsed | 1961-03-27 | 1965-09-07 | 2 | Details |
| US3184699A | Mounting means for electrical components | Expired / Lapsed | 1963-04-02 | 1965-05-18 | 2 | Details |
| US3177374A | Binary data transfer circuit | Expired / Lapsed | 1961-03-10 | 1965-04-06 | 2 | Details |
| US3167745A | Character identification system employing plural resistor-c… | Expired / Lapsed | 1962-01-15 | 1965-01-26 | 2 | Details |
| US3147403A | Cooling system for electronic apparatus | Expired / Lapsed | 1962-10-10 | 1964-09-01 | 2 | Details |
| US3147404A | Packaging of electrical equipment | Expired / Lapsed | 1962-05-11 | 1964-09-01 | 2 | Details |
| US3146350A | Apparatus for measuring dimensions by means of pulsed radia… | Expired / Lapsed | 1961-03-15 | 1964-08-25 | 1 | Details |
| US3137815A | Method and apparatus for testing printed wiring panels util… | Expired / Lapsed | 1960-03-03 | 1964-06-16 | 2 | Details |
| US3129361A | Control mechanism for laundering equipment | Expired / Lapsed | 1959-02-12 | 1964-04-14 | 2 | Details |
| US3128338A | Time-bandwidth reduction system for image signal transmissi… | Expired / Lapsed | 1962-08-15 | 1964-04-07 | 2 | Details |
| US3114149A | Combined radar and infra-red conical scanning antenna | Expired / Lapsed | 1961-12-04 | 1963-12-10 | 2 | Details |
| US3110897A | Radio echo detection system | Expired / Lapsed | 1954-01-13 | 1963-11-12 | 2 | Details |
| US3109148A | Oscillator frequency control system | Expired / Lapsed | 1959-04-23 | 1963-10-29 | 2 | Details |
| US3103162A | Electric appliance | Expired / Lapsed | 1960-12-20 | 1963-09-10 | 2 | Details |
| US3098212A | Remote control system with pulse duration responsive means | Expired / Lapsed | 1959-05-11 | 1963-07-16 | 2 | Details |
| US3096259A | Method of manufacturing semiconductive device | Expired / Lapsed | 1960-09-01 | 1963-07-02 | 2 | Details |
| US3094587A | Improved dual channel amplifier system | Expired / Lapsed | 1960-07-05 | 1963-06-18 | 1 | Details |
| US3089134A | Method and system for encoding a signal into binary code gr… | Expired / Lapsed | 1960-03-25 | 1963-05-07 | 1 | Details |
| US3088111A | Object detecting system | Expired / Lapsed | 1957-07-22 | 1963-04-30 | 2 | Details |
| US3061760A | Electrical apparatus | Expired / Lapsed | 1959-12-10 | 1962-10-30 | 0 | Details |
| US3056930A | Blocking oscillator with output during non-conduction inter… | Expired / Lapsed | 1958-12-23 | 1962-10-02 | 0 | Details |
| US3054954A | System for testing transistors | Expired / Lapsed | 1958-10-14 | 1962-09-18 | 0 | Details |
| US3043914A | Single channel stereophonic system | Expired / Lapsed | 1958-10-20 | 1962-07-10 | 0 | Details |
| US3036383A | Drying apparatus | Expired / Lapsed | 1958-08-26 | 1962-05-29 | 0 | Details |
| US3027219A | Electro-optical signal transducer system | Expired / Lapsed | 1958-12-19 | 1962-03-27 | 0 | Details |
| US3008124A | System for transmission and reception of binary digital inf… | Expired / Lapsed | 1956-02-23 | 1961-11-07 | 0 | Details |
| US3007005A | Transmitter for stereophonic information signals | Expired / Lapsed | 1959-02-12 | 1961-10-31 | 0 | Details |
| US3005321A | Multiple temperature refrigerator | Expired / Lapsed | 1959-08-25 | 1961-10-24 | 0 | Details |
| US3005735A | Method of fabricating semiconductor devices comprising cadm… | Expired / Lapsed | 1959-07-24 | 1961-10-24 | 2 | Details |
| US2997605A | High speed transistor multivibrator | Expired / Lapsed | 1959-02-19 | 1961-08-22 | 0 | Details |
| US2985806A | Semiconductor fabrication | Expired / Lapsed | 1958-12-24 | 1961-05-23 | 0 | Details |
| US2983875A | Emitter-follower coupled multisection filter circuit | Expired / Lapsed | 1958-04-18 | 1961-05-09 | 0 | Details |
| US2979444A | Electrochemical method and apparatus therefor | Expired / Lapsed | 1957-07-16 | 1961-04-11 | 2 | Details |
| US2973437A | Transistor circuit | Expired / Lapsed | 1955-02-02 | 1961-02-28 | 0 | Details |
| US2967979A | Electrical connection for printed wiring panel | Expired / Lapsed | 1956-01-20 | 1961-01-10 | 0 | Details |
| US2967951A | Direct-coupled transistor circuit | Expired / Lapsed | 1955-01-17 | 1961-01-10 | 0 | Details |
| US2964920A | Refrigeration | Expired / Lapsed | 1958-01-10 | 1960-12-20 | 0 | Details |
| US2964589A | Apparatus for controlling signal transfer in a color televi… | Expired / Lapsed | 1958-03-10 | 1960-12-13 | 0 | Details |
| FR1243787A | Portable television receiver | Expired / Lapsed | 1959-12-31 | 1960-10-14 | 0 | Details |
| CA605821A | Signal transfer circuit | Expired / Lapsed | — | 1960-09-27 | 0 | Details |
| US2954168A | Parallel binary adder-subtracter circuits | Expired / Lapsed | 1955-11-21 | 1960-09-27 | 0 | Details |
| US2950348A | Combined encoder and decoder system | Expired / Lapsed | 1954-08-03 | 1960-08-23 | 0 | Details |
| US2946957A | Signal amplifier system | Expired / Lapsed | 1955-03-10 | 1960-07-26 | 0 | Details |
| US2944119A | Transducers | Expired / Lapsed | 1957-12-20 | 1960-07-05 | 0 | Details |
| US2942166A | Semiconductor apparatus | Expired / Lapsed | 1959-03-23 | 1960-06-21 | 2 | Details |
| US2941131A | Semiconductive apparatus | Expired / Lapsed | 1955-05-13 | 1960-06-14 | 0 | Details |
| US2939914A | System for producing a timing signal for use in a binary co… | Expired / Lapsed | 1956-03-06 | 1960-06-07 | 0 | Details |
| US2939081A | Information storage system | Expired / Lapsed | 1956-11-19 | 1960-05-31 | 0 | Details |
| US2932684A | Semi-conductor units and methods of making them | Expired / Lapsed | 1956-09-10 | 1960-04-12 | 0 | Details |
| US2931743A | Method of fusing metal body to another body | Expired / Lapsed | 1955-05-02 | 1960-04-05 | 2 | Details |
| US2930108A | Method for fabricating semiconductive devices | Expired / Lapsed | 1956-05-04 | 1960-03-29 | 0 | Details |
| US2929939A | Transistor amplifier | Expired / Lapsed | 1955-11-17 | 1960-03-22 | 0 | Details |
| US2929999A | Semiconductive device and apparatus | Expired / Lapsed | 1955-09-19 | 1960-03-22 | 0 | Details |
| US2928931A | Fabrication of electrical devices | Expired / Lapsed | 1957-09-26 | 1960-03-15 | 0 | Details |
| US2927222A | Polarizing semiconductive apparatus | Expired / Lapsed | 1955-05-27 | 1960-03-01 | 0 | Details |
| US2922837A | Color camera output sampling system | Expired / Lapsed | 1955-12-30 | 1960-01-26 | 0 | Details |
| US2922893A | Document identifying system | Expired / Lapsed | 1954-10-15 | 1960-01-26 | 0 | Details |
| US2922049A | Mask controlled signal generating system | Expired / Lapsed | 1955-05-06 | 1960-01-19 | 0 | Details |
| US2918648A | Testing apparatus | Expired / Lapsed | 1956-06-15 | 1959-12-22 | 0 | Details |
| US2906647A | Method of treating semiconductor devices | Expired / Lapsed | 1957-02-25 | 1959-09-29 | 2 | Details |
| US2901747A | Color identification in radar systems | Expired / Lapsed | 1946-06-07 | 1959-08-25 | 0 | Details |
| US2898518A | Electrical apparatus and method of manufacturing the same | Expired / Lapsed | 1955-10-17 | 1959-08-04 | 0 | Details |
| US2897353A | Non-linear device varying impedance match between antenna a… | Expired / Lapsed | 1955-10-20 | 1959-07-28 | 0 | Details |
| US2896078A | Amplitude measuring circuit | Expired / Lapsed | 1953-04-29 | 1959-07-21 | 0 | Details |
| US2888647A | System for representing a time interval by a coded signal | Expired / Lapsed | 1955-05-23 | 1959-05-26 | 0 | Details |
| US2885609A | Semiconductive device and method for the fabrication thereof | Expired / Lapsed | 1955-01-31 | 1959-05-05 | 1 | Details |
| US2884544A | Electrical circuits employing semiconductor devices | Expired / Lapsed | 1954-02-17 | 1959-04-28 | 0 | Details |
| US2881405A | Mounting apparatus | Expired / Lapsed | 1956-03-07 | 1959-04-07 | 0 | Details |
| US2879344A | Semiconductor signal-translating circuit of variable gain | Expired / Lapsed | 1955-09-29 | 1959-03-24 | 0 | Details |
| US2877347A | Signal matrixing circuit | Expired / Lapsed | 1954-04-08 | 1959-03-10 | 0 | Details |
| US2873233A | Method of electrodepositing metals | Expired / Lapsed | 1956-03-21 | 1959-02-10 | 2 | Details |
| US2870010A | Method of manufacturing electrical apparatus | Expired / Lapsed | 1954-02-04 | 1959-01-20 | 2 | Details |
| US2867777A | Delay line | Expired / Lapsed | 1957-08-21 | 1959-01-06 | 0 | Details |
| US2866015A | Gain control system | Expired / Lapsed | 1954-04-22 | 1958-12-23 | 0 | Details |
| US2862998A | Color television system | Expired / Lapsed | 1951-09-14 | 1958-12-02 | 0 | Details |
| US2862095A | Vapor treating means | Expired / Lapsed | 1954-10-07 | 1958-11-25 | 0 | Details |
| US2858699A | Cooking temperature measuring apparatus | Expired / Lapsed | 1955-05-09 | 1958-11-04 | 0 | Details |
| US2857560A | Semiconductor unit and method of making it | Expired / Lapsed | 1955-12-20 | 1958-10-21 | 0 | Details |
| US2850627A | System for maintaining predetermined portions of a signal a… | Expired / Lapsed | 1952-12-08 | 1958-09-02 | 0 | Details |
| US2849296A | Etching composition and method | Expired / Lapsed | 1956-01-23 | 1958-08-26 | 1 | Details |
| US2846346A | Semiconductor device | Expired / Lapsed | 1954-03-26 | 1958-08-05 | 2 | Details |
| US2842841A | Method of soldering leads to semiconductor devices | Expired / Lapsed | 1955-06-13 | 1958-07-15 | 2 | Details |
| US2841704A | Signal integrating system | Expired / Lapsed | 1952-04-09 | 1958-07-01 | 0 | Details |
| US2840801A | Magnetic core information storage systems | Expired / Lapsed | 1955-06-29 | 1958-06-24 | 0 | Details |
| US2833976A | Positioning mechanism | Expired / Lapsed | 1955-07-15 | 1958-05-06 | 0 | Details |
| US2828411A | Signal mixer system | Expired / Lapsed | 1955-04-28 | 1958-03-25 | 0 | Details |
| US2813973A | Diode frequency converter with nonsinusoidal local oscillat… | Expired / Lapsed | 1953-01-30 | 1957-11-19 | 0 | Details |
| US2807718A | Transistor-detector | Expired / Lapsed | 1954-06-03 | 1957-09-24 | 0 | Details |
| US2800580A | Delay system | Expired / Lapsed | 1952-04-21 | 1957-07-23 | 0 | Details |
| US2796505A | Precision voltage regulating element | Expired / Lapsed | 1952-12-22 | 1957-06-18 | 0 | Details |
| US2793347A | Phase detector systems | Expired / Lapsed | 1953-11-24 | 1957-05-21 | 0 | Details |
| US2777192A | Method of forming a printed circuit and soldering component… | Expired / Lapsed | 1952-12-03 | 1957-01-15 | 0 | Details |
| US2777193A | Circuit construction | Expired / Lapsed | 1952-07-17 | 1957-01-15 | 0 | Details |
| US2777054A | Frequency stabilized radio relay system | Expired / Lapsed | 1952-03-11 | 1957-01-08 | 0 | Details |
| US2773979A | Frequency converter | Expired / Lapsed | 1953-02-02 | 1956-12-11 | 0 | Details |
| US2769855A | Color television camera tube with indexing structure | Expired / Lapsed | 1950-12-29 | 1956-11-06 | 0 | Details |
| US2761007A | Plural phase subcarrier color television system | Expired / Lapsed | 1954-07-21 | 1956-08-28 | 0 | Details |
| US2742531A | Pilot signal controlled, color registration system | Expired / Lapsed | 1951-08-17 | 1956-04-17 | 0 | Details |
| US2740046A | Signal control circuit | Expired / Lapsed | 1950-11-25 | 1956-03-27 | 0 | Details |
| US2739307A | Pulse-echo system for providing indications of moving objec… | Expired / Lapsed | 1946-08-31 | 1956-03-20 | 0 | Details |
| US2729697A | Color television system | Expired / Lapsed | 1952-02-28 | 1956-01-03 | 0 | Details |
| US2728075A | Object position indicating system incorporating means for a… | Expired / Lapsed | 1946-11-16 | 1955-12-20 | 0 | Details |
| US2718000A | Radio locating system for producing stereoscopic indication… | Expired / Lapsed | 1946-11-06 | 1955-09-13 | 0 | Details |
| US2716151A | Electrical system | Expired / Lapsed | 1951-07-13 | 1955-08-23 | 0 | Details |
| US2714710A | Transformer | Expired / Lapsed | 1949-07-23 | 1955-08-02 | 0 | Details |
| US2713133A | Germanium diode and method for the fabrication thereof | Expired / Lapsed | 1952-06-05 | 1955-07-12 | 2 | Details |
| US2712437A | Temperature control apparatus for refrigerators | Expired / Lapsed | 1952-03-21 | 1955-07-05 | 0 | Details |
| US2705794A | Signal modifying apparatus for eliminating variations as a … | Expired / Lapsed | 1946-06-11 | 1955-04-05 | 0 | Details |
| US2702371A | Hybrid network for combining and separating electromagnetic… | Expired / Lapsed | 1949-02-17 | 1955-02-15 | 0 | Details |
| US2689269A | Electrical system | Expired / Lapsed | 1951-01-26 | 1954-09-14 | 0 | Details |
| US2687020A | Two-temperature refrigeration apparatus | Expired / Lapsed | 1952-04-21 | 1954-08-24 | 0 | Details |
| US2685780A | Refrigerating system with defrosting circuit | Expired / Lapsed | 1951-09-27 | 1954-08-10 | 0 | Details |
| US2682366A | Computer for determining ratio of time varying signals | Expired / Lapsed | 1951-04-11 | 1954-06-29 | 0 | Details |
| US2680152A | Pulse communication system | Expired / Lapsed | 1949-01-14 | 1954-06-01 | 0 | Details |
| US2680151A | Multichannel communication system | Expired / Lapsed | 1949-01-14 | 1954-06-01 | 0 | Details |
| US2677763A | Pulse length discriminator | Expired / Lapsed | 1946-07-27 | 1954-05-04 | 0 | Details |
| US2673254A | Low-noise amplifier | Expired / Lapsed | 1951-04-12 | 1954-03-23 | 0 | Details |
| US2672572A | Traveling wave tube | Expired / Lapsed | 1947-11-28 | 1954-03-16 | 0 | Details |
| US2671129A | Electrical system | Expired / Lapsed | 1951-06-11 | 1954-03-02 | 0 | Details |
| US2658117A | High impedance power supply | Expired / Lapsed | 1949-11-16 | 1953-11-03 | 0 | Details |
| US2648722A | Electrical system for altering phase displacement of sequen… | Expired / Lapsed | 1951-02-15 | 1953-08-11 | 0 | Details |
| US2627730A | Defrostable refrigeration system | Expired / Lapsed | 1950-12-09 | 1953-02-10 | 0 | Details |
| US2621243A | Moving target indication | Expired / Lapsed | 1946-12-05 | 1952-12-09 | 0 | Details |
| US2607009A | Electromagnetic wave transmissive structure | Expired / Lapsed | 1948-10-08 | 1952-08-12 | 0 | Details |
| US2601096A | Modulator | Expired / Lapsed | 1950-12-29 | 1952-06-17 | 0 | Details |
| US2598929A | Direct current reinsertion circuit | Expired / Lapsed | 1949-12-15 | 1952-06-03 | 0 | Details |
| US2590784A | Heterodyne frequency modulator with automatic deviation con… | Expired / Lapsed | 1948-11-26 | 1952-03-25 | 0 | Details |
| US2588610A | Directional antenna system | Expired / Lapsed | 1946-06-07 | 1952-03-11 | 0 | Details |
| US2584308A | Electronic tube of the traveling wave type | Expired / Lapsed | 1948-01-28 | 1952-02-05 | 0 | Details |
| US2576424A | Automatic speed control for railguided vehicles | Expired / Lapsed | 1948-10-09 | 1951-11-27 | 0 | Details |
| US2567845A | Counter circuit | Expired / Lapsed | 1945-04-12 | 1951-09-11 | 0 | Details |
| US2560313A | Manual tuning system for radio receivers | Expired / Lapsed | 1947-11-15 | 1951-07-10 | 0 | Details |
| US2560312A | Tuning aid for radio receivers | Expired / Lapsed | 1947-10-03 | 1951-07-10 | 0 | Details |
| US2553368A | Automatic frequency control for television receivers | Expired / Lapsed | 1950-01-07 | 1951-05-15 | 0 | Details |
| US2551771A | Electrical pulse generator | Expired / Lapsed | 1944-08-30 | 1951-05-08 | 0 | Details |
| US2551348A | Electrical apparatus | Expired / Lapsed | 1945-03-28 | 1951-05-01 | 0 | Details |
| US2540827A | Signal delay device | Expired / Lapsed | 1947-03-07 | 1951-02-06 | 0 | Details |
| US2540817A | Band-pass coupling network | Expired / Lapsed | 1947-01-30 | 1951-02-06 | 0 | Details |
| US2540016A | Electrical system | Expired / Lapsed | 1948-03-17 | 1951-01-30 | 0 | Details |
| US2536346A | Pulse type radio range tracking and indicating system | Expired / Lapsed | 1946-03-01 | 1951-01-02 | 0 | Details |
| US2535162A | Position indication and control system for moving objects o… | Expired / Lapsed | 1945-08-04 | 1950-12-26 | 0 | Details |
| US2532221A | Pulse modulated echo ranging system | Expired / Lapsed | 1945-01-16 | 1950-11-28 | 0 | Details |
| US2529547A | Frequency divider | Expired / Lapsed | 1948-03-23 | 1950-11-14 | 0 | Details |
| US2528973A | Adjustable support for cathode-ray tubes | Expired / Lapsed | 1949-01-06 | 1950-11-07 | 0 | Details |
| US2528020A | Mask controlled feedback system for cathode-ray tubes | Expired / Lapsed | 1945-07-24 | 1950-10-31 | 0 | Details |
| US2525926A | Tone arm latching mechanism | Expired / Lapsed | 1947-07-01 | 1950-10-17 | 0 | Details |
| US2524939A | Integral socket and printed circuit panel | Expired / Lapsed | 1948-09-09 | 1950-10-10 | 0 | Details |
| US2523455A | Object locating system | Expired / Lapsed | 1944-05-30 | 1950-09-26 | 0 | Details |
| US2523162A | Electrical system | Expired / Lapsed | 1945-10-03 | 1950-09-19 | 0 | Details |
| US2521146A | Automatic blanking-level control for television receivers | Expired / Lapsed | 1948-07-09 | 1950-09-05 | 0 | Details |
| US2520012A | Negative bias limiter for automatic gain control circuits | Expired / Lapsed | 1948-01-08 | 1950-08-22 | 0 | Details |
| US2519935A | Electrical system for the transmission of angular or azimut… | Expired / Lapsed | 1945-08-14 | 1950-08-22 | 0 | Details |
| US2518092A | Ultra high frequency band-pass circuits | Expired / Lapsed | 1945-07-24 | 1950-08-08 | 0 | Details |
| US2516944A | Impedance-matching device | Expired / Lapsed | 1947-12-18 | 1950-08-01 | 0 | Details |
| US2511896A | Device for flexibly interconnecting wave guides | Expired / Lapsed | 1944-05-31 | 1950-06-20 | 0 | Details |
| US2510167A | Pulse generator and starting circuit therefor | Expired / Lapsed | 1948-03-25 | 1950-06-06 | 0 | Details |
| US2509374A | Electromagnetic wave amplifier | Expired / Lapsed | 1946-06-07 | 1950-05-30 | 0 | Details |
| US2506692A | Mounting unit for phonograph tone-arms | Expired / Lapsed | 1947-10-11 | 1950-05-09 | 0 | Details |
| US2506329A | Phase-shift network and oscillator | Expired / Lapsed | 1944-11-16 | 1950-05-02 | 0 | Details |
| US2505072A | Electrical system | Expired / Lapsed | 1945-02-03 | 1950-04-25 | 0 | Details |
| US2505525A | Device for testing pulse type radar system | Expired / Lapsed | 1944-07-26 | 1950-04-25 | 0 | Details |
| US2501028A | Automatic valve mechanism for steam irons | Expired / Lapsed | 1944-09-30 | 1950-03-21 | 0 | Details |
| US2499844A | Receiver for pulse-position-modulation systems | Expired / Lapsed | 1947-01-16 | 1950-03-07 | 0 | Details |
| US2498839A | Double time constant automatic volume control circuit | Expired / Lapsed | 1947-10-25 | 1950-02-28 | 0 | Details |
| US2497290A | Frequency detector and frequency control circuits | Expired / Lapsed | 1947-10-17 | 1950-02-14 | 0 | Details |
| US2496355A | Air conditioning apparatus | Expired / Lapsed | 1949-02-03 | 1950-02-07 | 0 | Details |
| US2496772A | Cavity resonator | Expired / Lapsed | 1944-07-12 | 1950-02-07 | 0 | Details |
| US2491684A | Deflecting signal generator | Expired / Lapsed | 1946-11-08 | 1949-12-20 | 0 | Details |
| US2492018A | Synchronizing system for sawtooth wave generators | Expired / Lapsed | 1944-11-11 | 1949-12-20 | 0 | Details |
| US2487641A | Electronic pointer for television images | Expired / Lapsed | 1946-09-07 | 1949-11-08 | 0 | Details |
| US2487191A | Double diode variable frequency divider | Expired / Lapsed | 1945-01-24 | 1949-11-08 | 0 | Details |
| US2486551A | Automatic tuning electric system | Expired / Lapsed | 1944-10-04 | 1949-11-01 | 0 | Details |
| US2485733A | Air conditioner having condensate removal means | Expired / Lapsed | 1946-12-24 | 1949-10-25 | 0 | Details |
| US2486197A | Three-dimensional proximity indication system | Expired / Lapsed | 1944-08-03 | 1949-10-25 | 0 | Details |
| US2485031A | High-frequency transmission system | Expired / Lapsed | 1944-08-31 | 1949-10-18 | 0 | Details |
| US2485029A | Frequency stabilizer for oscillators | Expired / Lapsed | 1944-08-30 | 1949-10-18 | 0 | Details |
| US2483802A | Ultra high frequency measuring device | Expired / Lapsed | 1944-06-20 | 1949-10-04 | 0 | Details |
| US2481902A | Automatic frequency control circuit for frequency modulatio… | Expired / Lapsed | 1946-04-10 | 1949-09-13 | 0 | Details |
| US2481331A | Antenna orientation control system | Expired / Lapsed | 1944-08-29 | 1949-09-06 | 0 | Details |
| US2479650A | Selective wave guide energy meter | Expired / Lapsed | 1944-11-01 | 1949-08-23 | 0 | Details |
| US2479954A | Pulse delay system | Expired / Lapsed | 1944-04-29 | 1949-08-23 | 0 | Details |
| US2479051A | Alternating current type limit bridge | Expired / Lapsed | 1945-04-12 | 1949-08-16 | 0 | Details |
| US2477395A | Apparatus for continuously predicting a trend in observed d… | Expired / Lapsed | 1945-04-12 | 1949-07-26 | 0 | Details |
| US2476409A | Automatic regeneration control for pulse-echo systems | Expired / Lapsed | 1946-03-06 | 1949-07-19 | 0 | Details |
| US2475074A | Frequency stabilizing system | Expired / Lapsed | 1944-08-31 | 1949-07-05 | 0 | Details |
| US2472536A | Tuning indicator system | Expired / Lapsed | 1947-11-25 | 1949-06-07 | 0 | Details |
| US2472165A | Automatic focus control for cathode-ray tubes | Expired / Lapsed | 1947-04-29 | 1949-06-07 | 0 | Details |
| US2471888A | Radio object location device | Expired / Lapsed | 1944-08-03 | 1949-05-31 | 0 | Details |
| US2471601A | Variable resistance phonograph pickup | Expired / Lapsed | 1944-04-28 | 1949-05-31 | 0 | Details |
| US2471021A | Radio wave guide | Expired / Lapsed | 1944-08-31 | 1949-05-24 | 0 | Details |
| US2470573A | Oscillator modulating system | Expired / Lapsed | 1944-06-10 | 1949-05-17 | 0 | Details |
| US2468350A | Automatic circuit-tuning apparatus | Expired / Lapsed | 1945-03-30 | 1949-04-26 | 0 | Details |
| US2467462A | Electrooptical projection apparatus | Expired / Lapsed | 1947-10-22 | 1949-04-19 | 0 | Details |
| US2467309A | Grille assembly | Expired / Lapsed | 1946-01-08 | 1949-04-12 | 0 | Details |
| US2466959A | Radio receiver noise discriminating circuit | Expired / Lapsed | 1944-09-30 | 1949-04-12 | 0 | Details |
| US2464006A | Radio wave absorption device | Expired / Lapsed | 1944-04-28 | 1949-03-08 | 0 | Details |
| US2462224A | Noise reducing radio receiver | Expired / Lapsed | 1944-09-02 | 1949-02-22 | 0 | Details |
| US2462759A | Apparatus for receiving frequencymodulated waves | Expired / Lapsed | 1944-03-31 | 1949-02-22 | 0 | Details |
| US2461667A | Electrical system | Expired / Lapsed | 1946-10-03 | 1949-02-15 | 0 | Details |
| US2460597A | Position indication and control system | Expired / Lapsed | 1945-08-04 | 1949-02-01 | 0 | Details |
| US2458650A | Coaxial line generator | Expired / Lapsed | 1944-09-20 | 1949-01-11 | 0 | Details |
| US2457911A | Deviation correction for cathoderay beams | Expired / Lapsed | 1946-11-23 | 1949-01-04 | 0 | Details |
| US2458291A | Deviation correction for cathoderay beams | Expired / Lapsed | 1946-11-23 | 1949-01-04 | 0 | Details |
| US2458048A | Humidity control system | Expired / Lapsed | 1944-05-27 | 1949-01-04 | 0 | Details |
| US2455977A | Magnetic lens for correcting scanning defects | Expired / Lapsed | 1946-12-31 | 1948-12-14 | 0 | Details |
| US2455532A | Light responsive displacement indicator | Expired / Lapsed | 1945-05-24 | 1948-12-07 | 0 | Details |
| US2455158A | Wave guide coupling device | Expired / Lapsed | 1944-08-31 | 1948-11-30 | 0 | Details |
| US2454355A | Electric motor control system | Expired / Lapsed | 1945-07-07 | 1948-11-23 | 0 | Details |
| US2454530A | Phase adjuster for fixed-branch wave guide | Expired / Lapsed | 1944-10-13 | 1948-11-23 | 0 | Details |
| US2451903A | Refrigerator having a heat dissipating device for the elect… | Expired / Lapsed | 1944-06-30 | 1948-10-19 | 0 | Details |
| US2450930A | Electrical bridge network | Expired / Lapsed | 1945-10-03 | 1948-10-12 | 0 | Details |
| US2448070A | Saw-tooth generator with automatic amplitude control | Expired / Lapsed | 1944-08-30 | 1948-08-31 | 0 | Details |
| US2448069A | Saw-tooth generator with automatic amplitude control | Expired / Lapsed | 1944-08-30 | 1948-08-31 | 0 | Details |
| US2447839A | Drive mechanism for the intermittent movement in a televisi… | Expired / Lapsed | 1945-09-11 | 1948-08-24 | 0 | Details |
| US2447894A | Electric refrigerator alarm system | Expired / Lapsed | 1944-08-30 | 1948-08-24 | 0 | Details |
| US2445233A | Signaling system | Expired / Lapsed | 1944-09-01 | 1948-07-13 | 0 | Details |
| US2443922A | Control circuit for relaxation oscillators | Expired / Lapsed | 1944-08-02 | 1948-06-22 | 0 | Details |
| US2441464A | Modulated-oscillator, phonograph transducer | Expired / Lapsed | 1941-06-13 | 1948-05-11 | 0 | Details |
| US2440628A | Humidity control | Expired / Lapsed | 1945-02-02 | 1948-04-27 | 0 | Details |
| US2439245A | Resistance-capacitance type oscillator | Expired / Lapsed | 1945-06-02 | 1948-04-06 | 0 | Details |
| US2438768A | Apparatus for varying the frequency of resonant cavities | Expired / Lapsed | 1944-04-28 | 1948-03-30 | 0 | Details |
| US2437449A | Reflex thermal electric meter | Expired / Lapsed | 1944-08-03 | 1948-03-09 | 0 | Details |
| US2436700A | Cavity resonator oscillator | Expired / Lapsed | 1944-01-29 | 1948-02-24 | 0 | Details |
| US2434084A | Protective device | Expired / Lapsed | 1943-11-30 | 1948-01-06 | 0 | Details |
| US2428616A | Electrical protective device | Expired / Lapsed | 1943-11-02 | 1947-10-07 | 0 | Details |
| US2427382A | Power supply system for velocity modulated vacuum tubes | Expired / Lapsed | 1944-02-29 | 1947-09-16 | 0 | Details |
| US2427523A | Blanking circuit | Expired / Lapsed | 1943-11-06 | 1947-09-16 | 0 | Details |
| US2427191A | Blanking control for radio beacon systems | Expired / Lapsed | 1944-10-25 | 1947-09-09 | 0 | Details |
| US2425213A | Magnetic wire telegraphophone system | Expired / Lapsed | 1945-05-05 | 1947-08-05 | 0 | Details |
| US2424513A | Adjustable mounting | Expired / Lapsed | 1946-05-31 | 1947-07-22 | 0 | Details |
| US2424481A | Electrical system | Expired / Lapsed | 1944-09-30 | 1947-07-22 | 0 | Details |
| US2421312A | Deflection signal generator for polar scanning of cathode-r… | Expired / Lapsed | 1944-04-25 | 1947-05-27 | 0 | Details |
| US2419696A | Radio receiver for frequency modulated signals | Expired / Lapsed | 1945-01-08 | 1947-04-29 | 0 | Details |
| US2417621A | Color image projection system | Expired / Lapsed | 1945-10-05 | 1947-03-18 | 0 | Details |
| US2417717A | Detector for frequency modulated signals | Expired / Lapsed | 1944-10-24 | 1947-03-18 | 0 | Details |
| US2416354A | Controlled humidity refrigerator | Expired / Lapsed | 1944-03-29 | 1947-02-25 | 0 | Details |
| US2416166A | Control apparatus for motor operated device | Expired / Lapsed | 1944-01-29 | 1947-02-18 | 0 | Details |
| US2413939A | Ultra high frequency discriminator | Expired / Lapsed | 1944-03-21 | 1947-01-07 | 0 | Details |
| US2410707A | Device for measuring highfrequency power | Expired / Lapsed | 1944-05-18 | 1946-11-05 | 0 | Details |
| US2409599A | Coaxial line termination | Expired / Lapsed | 1944-04-28 | 1946-10-15 | 0 | Details |
| US2409474A | High-frequency attenuator and divider circuits | Expired / Lapsed | 1943-05-13 | 1946-10-15 | 0 | Details |
| US2406751A | Demonstration apparatus | Expired / Lapsed | 1944-05-27 | 1946-09-03 | 0 | Details |
| US2387465A | Evaporator-condenser construction | Expired / Lapsed | 1943-11-30 | 1945-10-23 | 0 | Details |
| US2367110A | Audio amplifier system | Expired / Lapsed | 1938-03-09 | 1945-01-09 | 0 | Details |
| US2276742A | Refrigerator | Expired / Lapsed | 1938-05-02 | 1942-03-17 | 0 | Details |