TDK Micronas GmbH
TDK MicronActive Patents
0
Total Holdings
337
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| DE2703887A1 | LIGHT GUIDE CONNECTION FOR OPTICAL COUPLING ARRANGEMENTS | Expired / Lapsed | 1977-01-31 | — | 0 | Details |
| DE2612631A1 | EXTERIOR MIRROR FOR MOTOR VEHICLES | Expired / Lapsed | 1976-03-25 | — | 0 | Details |
| DE2540965A1 | TELEVISION RECEIVER WITH A DEVICE FOR THE SIMULTANEOUS PLAY… | Expired / Lapsed | 1975-09-13 | — | 0 | Details |
| DE2413839A1 | TELEVISION RECEIVER WITH A DEVICE FOR THE SIMULTANEOUS PLAY… | Expired / Lapsed | 1974-03-22 | — | 0 | Details |
| US4633517A | Circuit for decoding traffic information message tone signa… | Expired / Lapsed | 1985-05-21 | 1986-12-30 | 3 | Details |
| US4580247A | Semiconductor floating gate memory cell | Expired / Lapsed | 1985-05-01 | 1986-04-01 | 10 | Details |
| US3914015A | Fiber optic connector and assembly method | Expired / Lapsed | 1974-10-15 | 1975-10-21 | 11 | Details |
| US3910106A | Transducer | Expired / Lapsed | 1974-11-27 | 1975-10-07 | 7 | Details |
| US3910678A | Fiber optic tubular star connector | Expired / Lapsed | 1974-11-22 | 1975-10-07 | 12 | Details |
| US3906198A | Net weight oil computer or the like | Expired / Lapsed | 1974-10-11 | 1975-09-16 | 21 | Details |
| US3878374A | Densitometer | Expired / Lapsed | 1973-12-10 | 1975-04-15 | 45 | Details |
| US3878397A | Electro-optical transmission line | Expired / Lapsed | 1973-06-29 | 1975-04-15 | 4 | Details |
| US3873173A | Electrical connector assembly | Expired / Lapsed | 1973-10-05 | 1975-03-25 | 18 | Details |
| US3872474A | Airport ground surveillance system | Expired / Lapsed | 1973-01-02 | 1975-03-18 | 10 | Details |
| US3855896A | Wedge anchor | Expired / Lapsed | 1973-09-14 | 1974-12-24 | 19 | Details |
| US3845485A | Non-rotating antenna | Expired / Lapsed | 1973-04-18 | 1974-10-29 | 8 | Details |
| US3836043A | Transit/combination case shock mount arrangement | Expired / Lapsed | 1971-12-30 | 1974-09-17 | 30 | Details |
| US3835270A | Joy stick control mechanism with movable printed circuit sw… | Expired / Lapsed | 1973-06-04 | 1974-09-10 | 26 | Details |
| US3825874A | Electrical connector | Expired / Lapsed | 1973-07-05 | 1974-07-23 | 6 | Details |
| US3824340A | Variable transmission time delay compensation arrangement | Expired / Lapsed | 1972-11-08 | 1974-07-16 | 11 | Details |
| US3817104A | Temperature measuring voltage to current converter | Expired / Lapsed | 1972-03-01 | 1974-06-18 | 14 | Details |
| US3815815A | Solid state thermostat | Expired / Lapsed | 1972-09-05 | 1974-06-11 | 13 | Details |
| US3798378A | Frame synchronization system | Expired / Lapsed | 1972-11-07 | 1974-03-19 | 26 | Details |
| US3789307A | Frame synchronization system | Expired / Lapsed | 1971-09-20 | 1974-01-29 | 8 | Details |
| US3771839A | Differential-lock type device for a motor vehicle | Expired / Lapsed | 1971-07-28 | 1973-11-13 | 8 | Details |
| US3770897A | Frame synchronization system | Expired / Lapsed | 1971-12-06 | 1973-11-06 | 23 | Details |
| US3756663A | Anti-skid system | Expired / Lapsed | 1971-12-08 | 1973-09-04 | 14 | Details |
| US3757340A | Radio location system | Expired / Lapsed | 1958-06-27 | 1973-09-04 | 16 | Details |
| US3750184A | Super-balanced feed-through dipole antenna | Expired / Lapsed | 1972-01-12 | 1973-07-31 | 14 | Details |
| US3750178A | Radio location detection system | Expired / Lapsed | 1959-05-22 | 1973-07-31 | 19 | Details |
| US3746925A | Method and apparatus for determining certain accelerations … | Expired / Lapsed | 1972-05-31 | 1973-07-17 | 20 | Details |
| US3742453A | Automatic hotel security system using coded magnetic card | Expired / Lapsed | 1971-12-16 | 1973-06-26 | 8 | Details |
| US3725665A | Pulse generator | Expired / Lapsed | 1972-03-31 | 1973-04-03 | 9 | Details |
| US3722264A | Transducer and components therefor | Expired / Lapsed | 1971-01-25 | 1973-03-27 | 10 | Details |
| US3721939A | Electrical connector | Expired / Lapsed | 1971-07-06 | 1973-03-20 | 3 | Details |
| US3692437A | Pump | Expired / Lapsed | 1970-01-29 | 1972-09-19 | 13 | Details |
| US3680089A | Aircraft electronic landing responser system using airborne… | Expired / Lapsed | 1970-03-30 | 1972-07-25 | 11 | Details |
| US3678200A | Frame synchronization system | Expired / Lapsed | 1970-08-24 | 1972-07-18 | 11 | Details |
| US3676833A | Hermaphorodite electrical connector | Expired / Lapsed | 1970-10-30 | 1972-07-11 | 3 | Details |
| US3673548A | Printed circuit board connector | Expired / Lapsed | 1970-10-19 | 1972-06-27 | 5 | Details |
| US3670336A | Electronic technique for an all-electronic cylindrical arra… | Expired / Lapsed | 1970-05-11 | 1972-06-13 | 12 | Details |
| US3665087A | Manikin audio system | Expired / Lapsed | 1970-11-25 | 1972-05-23 | 13 | Details |
| US3652137A | Antiskid control circuit | Expired / Lapsed | 1970-02-25 | 1972-03-28 | 8 | Details |
| US3651489A | Secondary emission field effect charge storage system | Expired / Lapsed | 1970-01-22 | 1972-03-21 | 23 | Details |
| US3641573A | Pseudonoise radar system | Expired / Lapsed | 1969-11-26 | 1972-02-08 | 9 | Details |
| US3641438A | Wideband receiver | Expired / Lapsed | 1966-01-20 | 1972-02-08 | 13 | Details |
| US3631344A | Ratio squared predetection combining diversity receiving sy… | Expired / Lapsed | 1969-12-12 | 1971-12-28 | 11 | Details |
| US3629712A | Phase comparator | Expired / Lapsed | 1970-08-24 | 1971-12-21 | 7 | Details |
| US3612762A | Automatic gain control system for camera tube | Expired / Lapsed | 1969-03-26 | 1971-10-12 | 8 | Details |
| US3611435A | Satellite communication system | Expired / Lapsed | 1969-03-24 | 1971-10-05 | 30 | Details |
| US3597539A | Frame synchronization system | Expired / Lapsed | 1968-12-04 | 1971-08-03 | 11 | Details |
| US3594024A | Piston and rod assembly | Expired / Lapsed | 1969-10-17 | 1971-07-20 | 8 | Details |
| US3593878A | Cylindrical pressure vessel and cover | Expired / Lapsed | 1969-10-14 | 1971-07-20 | 8 | Details |
| US3594502A | A rapid frame synchronization system | Expired / Lapsed | 1968-12-04 | 1971-07-20 | 11 | Details |
| US3588758A | Electrical connector filter having dielectric and ferromagn… | Expired / Lapsed | 1969-04-28 | 1971-06-28 | 0 | Details |
| US3569915A | Grounding foil | Expired / Lapsed | 1968-09-16 | 1971-03-09 | 6 | Details |
| US3560978A | Electronically controlled antenna system | Expired / Lapsed | 1968-11-01 | 1971-02-02 | 0 | Details |
| US3532869A | Multiplier including two resistance bridges | Expired / Lapsed | 1968-11-14 | 1970-10-06 | 0 | Details |
| US3519975A | Electrical connector | Expired / Lapsed | 1968-03-25 | 1970-07-07 | 0 | Details |
| US3517999A | Optical strain gauge | Expired / Lapsed | 1966-01-07 | 1970-06-30 | 0 | Details |
| US3509280A | Adaptive speech pattern recognition system | Expired / Lapsed | 1968-11-01 | 1970-04-28 | 0 | Details |
| US3509374A | Double pole electronic switching circuit | Expired / Lapsed | 1967-05-01 | 1970-04-28 | 0 | Details |
| US3502347A | Apparatus for vehicle suspension control | Expired / Lapsed | 1967-11-06 | 1970-03-24 | 0 | Details |
| US3484554A | Pseudo-orthogonal pulse code system | Expired / Lapsed | 1967-03-02 | 1969-12-16 | 0 | Details |
| US3483331A | Originating office routing translator | Expired / Lapsed | 1965-05-17 | 1969-12-09 | 0 | Details |
| US3474446A | Cylindrical array antenna system with electronic scanning | Expired / Lapsed | 1968-02-26 | 1969-10-21 | 0 | Details |
| US3461451A | Code generator to produce permutations of code mates | Expired / Lapsed | 1967-09-22 | 1969-08-12 | 0 | Details |
| US3447104A | Electrical connector filter comprising at least one electri… | Expired / Lapsed | 1966-06-06 | 1969-05-27 | 0 | Details |
| US3441674A | Time division multiplex channel pulse distributor | Expired / Lapsed | 1965-07-29 | 1969-04-29 | 0 | Details |
| US3438002A | Pulse signal exchange | Expired / Lapsed | 1966-05-31 | 1969-04-08 | 0 | Details |
| US3437755A | Multiplex channel gate pulse generator from an intermixture… | Expired / Lapsed | 1965-03-11 | 1969-04-08 | 0 | Details |
| US3430197A | Error correction circuit for digital recording systems | Expired / Lapsed | 1965-10-21 | 1969-02-25 | 2 | Details |
| US3418586A | Digital pulse train detection system | Expired / Lapsed | 1965-09-08 | 1968-12-24 | 0 | Details |
| US3414677A | Time-bandwidth reduction by dividing binary type signal int… | Expired / Lapsed | 1964-12-28 | 1968-12-03 | 0 | Details |
| US3414785A | Control circuit for numerically positioned table | Expired / Lapsed | 1963-09-12 | 1968-12-03 | 0 | Details |
| US3411140A | Network status intelligence acquisition, assessment and com… | Expired / Lapsed | 1965-03-17 | 1968-11-12 | 0 | Details |
| US3406376A | Socket contact and method of manufacture | Expired / Lapsed | 1966-09-26 | 1968-10-15 | 0 | Details |
| US3404394A | Symbol generator | Expired / Lapsed | 1965-10-23 | 1968-10-01 | 0 | Details |
| US3394370A | Display monitor having light beam deflected over plural col… | Expired / Lapsed | 1965-12-03 | 1968-07-23 | 0 | Details |
| US3394229A | Toll ticketing telephone system | Expired / Lapsed | 1963-12-16 | 1968-07-23 | 0 | Details |
| US3393449A | Method of assembly of resistor matrix | Expired / Lapsed | 1963-11-01 | 1968-07-23 | 2 | Details |
| US3390308A | Multiple chip integrated circuit assembly | Expired / Lapsed | 1966-03-31 | 1968-06-25 | 0 | Details |
| US3384874A | Supervisory system having remote station selection by the n… | Expired / Lapsed | 1963-03-04 | 1968-05-21 | 2 | Details |
| US3379829A | Flaw detection apparatus | Expired / Lapsed | 1964-12-11 | 1968-04-23 | 2 | Details |
| US3377435A | Land-to-mobile telephone link | Expired / Lapsed | 1964-04-30 | 1968-04-09 | 0 | Details |
| US3375522A | Digital bearing measuring system | Expired / Lapsed | 1966-02-01 | 1968-03-26 | 0 | Details |
| US3375500A | Automated accounting system | Expired / Lapsed | 1964-08-24 | 1968-03-26 | 0 | Details |
| US3371334A | Digital to phase analog converter | Expired / Lapsed | 1964-05-18 | 1968-02-27 | 0 | Details |
| US3366737A | Message switching center for asynchronous start-stop telegr… | Expired / Lapsed | 1963-11-21 | 1968-01-30 | 0 | Details |
| US3359474A | Stepper motor control and step detector | Expired / Lapsed | 1964-11-27 | 1967-12-19 | 2 | Details |
| US3349398A | Satellite communication system | Expired / Lapsed | 1964-08-27 | 1967-10-24 | 2 | Details |
| US3346785A | Hidden emitter switching device | Expired / Lapsed | 1965-08-19 | 1967-10-10 | 2 | Details |
| US3335220A | Camera tube target protection system employing variable ras… | Expired / Lapsed | 1964-06-04 | 1967-08-08 | 2 | Details |
| US3334191A | Electronic queuing system having recall, intercept and prio… | Expired / Lapsed | 1964-10-26 | 1967-08-01 | 2 | Details |
| US3333229A | Strip cable connector | Expired / Lapsed | 1961-07-25 | 1967-07-25 | 2 | Details |
| US3329926A | Connector for printed circuit edgeboard or strip cable | Expired / Lapsed | 1965-12-30 | 1967-07-04 | 2 | Details |
| US3328697A | Selector for selecting the best responding one of a plurali… | Expired / Lapsed | 1963-06-28 | 1967-06-27 | 2 | Details |
| US3320534A | Pulse code modulation encoding and decoding apparatus | Expired / Lapsed | 1963-08-06 | 1967-05-16 | 2 | Details |
| US3303285A | Communication system for the selective transmission of spee… | Expired / Lapsed | 1963-05-29 | 1967-02-07 | 2 | Details |
| US3290504A | Distortion compensation of optoelectronic devices | Expired / Lapsed | 1963-09-06 | 1966-12-06 | 2 | Details |
| US3285287A | Pressure equalizing plural valve structure | Expired / Lapsed | 1963-07-17 | 1966-11-15 | 2 | Details |
| US3286032A | Digital microphone | Expired / Lapsed | 1963-06-03 | 1966-11-15 | 2 | Details |
| US3281805A | Skew elimination system utilizing a plurality of buffer shi… | Expired / Lapsed | 1962-10-11 | 1966-10-25 | 2 | Details |
| US3277237A | Printing cathode ray tube using photoconductive layer | Expired / Lapsed | 1963-11-29 | 1966-10-04 | 1 | Details |
| US3276902A | Method of vapor deposition employing an electron beam | Expired / Lapsed | 1963-10-01 | 1966-10-04 | 2 | Details |
| US3271201A | Planar semiconductor devices | Expired / Lapsed | 1962-10-30 | 1966-09-06 | 1 | Details |
| US3271674A | Circuit variance analyzer including scanner controlled para… | Expired / Lapsed | 1961-04-28 | 1966-09-06 | 2 | Details |
| US3258539A | Electronic switching telephone system | Expired / Lapsed | 1962-08-13 | 1966-06-28 | 2 | Details |
| US3248634A | Electronic ringing generator | Expired / Lapsed | 1962-08-28 | 1966-04-26 | 2 | Details |
| US3244922A | Electron multiplier having undulated passage with semicondu… | Expired / Lapsed | 1962-11-05 | 1966-04-05 | 2 | Details |
| US3242456A | Electrical connector with spring pin contact | Expired / Lapsed | 1963-10-07 | 1966-03-22 | 2 | Details |
| US3221108A | Electronic private branch exchange | Expired / Lapsed | 1962-10-15 | 1965-11-30 | 2 | Details |
| US3219902A | Reset mechanism for power operated loads | Expired / Lapsed | 1960-08-26 | 1965-11-23 | 1 | Details |
| US3209260A | Beyond-the-horizon communication system for air vehicles | Expired / Lapsed | 1961-03-16 | 1965-09-28 | 2 | Details |
| US3208065A | Impulse correlation function generator | Expired / Lapsed | 1963-07-24 | 1965-09-21 | 2 | Details |
| US3207997A | Image tube target locating device | Expired / Lapsed | 1962-06-29 | 1965-09-21 | 2 | Details |
| US3208042A | Validity check control of plural inputs to relay circuits | Expired / Lapsed | 1959-11-23 | 1965-09-21 | 2 | Details |
| US3204038A | Electronic switching telephone system | Expired / Lapsed | 1961-05-29 | 1965-08-31 | 2 | Details |
| US3202808A | Analog signal multiplier using carrier insertion | Expired / Lapsed | 1962-01-15 | 1965-08-24 | 2 | Details |
| US3201777A | Pulse code modulation coder | Expired / Lapsed | 1962-06-08 | 1965-08-17 | 2 | Details |
| US3201520A | Electronic switching matrix | Expired / Lapsed | 1961-10-16 | 1965-08-17 | 2 | Details |
| US3201687A | Digital delay system utilizintg variable decade scalers and… | Expired / Lapsed | 1961-06-09 | 1965-08-17 | 1 | Details |
| US3200355A | Electrical connector having rf filter | Expired / Lapsed | 1961-11-24 | 1965-08-10 | 2 | Details |
| US3196382A | Crimp type coaxial cable connector | Expired / Lapsed | 1962-08-07 | 1965-07-20 | 2 | Details |
| US3195048A | Time diversity communication system | Expired / Lapsed | 1962-06-04 | 1965-07-13 | 2 | Details |
| US3194948A | Velocity and position computer | Expired / Lapsed | 1958-08-07 | 1965-07-13 | 2 | Details |
| US3180205A | Distance measuring apparatus having a digital output circuit | Expired / Lapsed | 1960-06-09 | 1965-04-27 | 2 | Details |
| US3176245A | Frequency stabilized oscillator | Expired / Lapsed | 1959-05-07 | 1965-03-30 | 1 | Details |
| US3173138A | F.m. continuous wave radar system | Expired / Lapsed | 1959-03-12 | 1965-03-09 | 2 | Details |
| US3149235A | Photosensitive radiant spot tracking system | Expired / Lapsed | 1960-06-10 | 1964-09-15 | 2 | Details |
| US3149326A | F. m. radar display depicting velocity and range | Expired / Lapsed | 1959-09-03 | 1964-09-15 | 2 | Details |
| US3144606A | Passive satellite repeater system having orientation compen… | Expired / Lapsed | 1961-12-29 | 1964-08-11 | 2 | Details |
| US3144647A | Diversity system | Expired / Lapsed | 1959-12-01 | 1964-08-11 | 2 | Details |
| US3144637A | Recording system | Expired / Lapsed | 1955-11-10 | 1964-08-11 | 2 | Details |
| US3140767A | High speed automatic mail sorting systems | Expired / Lapsed | 1962-08-20 | 1964-07-14 | 2 | Details |
| US3141136A | Feedback amplifier gate | Expired / Lapsed | 1958-07-03 | 1964-07-14 | 2 | Details |
| US3136991A | Air traffic control system | Expired / Lapsed | 1960-08-01 | 1964-06-09 | 2 | Details |
| US3136424A | Automatic mail sorting system | Expired / Lapsed | 1959-06-24 | 1964-06-09 | 2 | Details |
| US3135916A | Apparatus for measuring small capacitance values independen… | Expired / Lapsed | 1960-05-18 | 1964-06-02 | 2 | Details |
| US3129991A | Printed circuit card rack assembly | Expired / Lapsed | 1960-12-14 | 1964-04-21 | 2 | Details |
| US3130361A | Voltage regulator | Expired / Lapsed | 1960-01-11 | 1964-04-21 | 1 | Details |
| US3129289A | Electronic line circuit | Expired / Lapsed | 1959-06-26 | 1964-04-14 | 2 | Details |
| US3117488A | Color pattern display system | Expired / Lapsed | 1960-04-12 | 1964-01-14 | 2 | Details |
| US3116441A | Circuit for maintaining a load energized at decreased power… | Expired / Lapsed | 1960-02-19 | 1963-12-31 | 2 | Details |
| US3110773A | Delayed call telephone system | Expired / Lapsed | 1959-10-09 | 1963-11-12 | 2 | Details |
| US3107300A | Infrared energy tracking system comprising oscillatory scan… | Expired / Lapsed | 1960-10-21 | 1963-10-15 | 2 | Details |
| US3104147A | Data recording system | Expired / Lapsed | 1958-08-12 | 1963-09-17 | 2 | Details |
| US3101446A | Signal to noise ratio indicator | Expired / Lapsed | 1960-09-02 | 1963-08-20 | 2 | Details |
| US3098994A | Self checking digital computer system | Expired / Lapsed | 1956-10-26 | 1963-07-23 | 1 | Details |
| US3094633A | Semiconductor multiplanar rectifying junction diode | Expired / Lapsed | 1960-09-29 | 1963-06-18 | 2 | Details |
| US3090240A | Electronic accelerometer | Expired / Lapsed | 1960-10-27 | 1963-05-21 | 2 | Details |
| US3090583A | System and method for determining the attitude of a space v… | Expired / Lapsed | 1960-02-08 | 1963-05-21 | 4 | Details |
| US3087986A | Optical search system | Expired / Lapsed | 1958-07-08 | 1963-04-30 | 2 | Details |
| US3086393A | Ice detector | Expired / Lapsed | 1959-06-30 | 1963-04-23 | 3 | Details |
| US3086850A | Method and means for growing and treating crystals | Expired / Lapsed | 1959-06-17 | 1963-04-23 | 2 | Details |
| US3082374A | Automatic testing system and timing device therefor | Expired / Lapsed | 1959-06-12 | 1963-03-19 | 4 | Details |
| US3081416A | Step-by-step switch | Expired / Lapsed | 1961-04-19 | 1963-03-12 | 2 | Details |
| US3080761A | Accelerometer | Expired / Lapsed | 1959-03-24 | 1963-03-12 | 2 | Details |
| US3069681A | System for large-area display of two-color information | Expired / Lapsed | 1960-03-14 | 1962-12-18 | 0 | Details |
| US3067936A | Coin controlled computer | Expired / Lapsed | 1959-11-16 | 1962-12-11 | 0 | Details |
| US3067291A | Pulse communication system | Expired / Lapsed | 1956-11-30 | 1962-12-04 | 0 | Details |
| US3060331A | Rejuvenating timer | Expired / Lapsed | 1960-02-19 | 1962-10-23 | 0 | Details |
| US3056856A | Electronic line circuit for code signaling system | Expired / Lapsed | 1960-11-07 | 1962-10-02 | 0 | Details |
| US3055843A | Tissue-equivalent plastic composition | Expired / Lapsed | 1959-04-07 | 1962-09-25 | 1 | Details |
| US3054003A | Electronic relay responsive to instantaneous polarity of co… | Expired / Lapsed | 1961-02-08 | 1962-09-11 | 0 | Details |
| US3054106A | Directional beacon antenna | Expired / Lapsed | 1959-01-02 | 1962-09-11 | 0 | Details |
| US3051881A | Channel selector servo circuit | Expired / Lapsed | 1960-07-08 | 1962-08-28 | 0 | Details |
| US3051928A | Pulse pair decoder | Expired / Lapsed | 1959-06-30 | 1962-08-28 | 0 | Details |
| US3048714A | Variable pulse width generating system | Expired / Lapsed | 1960-06-24 | 1962-08-07 | 0 | Details |
| US3048783A | Signal receiving system | Expired / Lapsed | 1959-04-28 | 1962-08-07 | 0 | Details |
| US3048708A | Pulse timing control circuit | Expired / Lapsed | 1958-06-25 | 1962-08-07 | 0 | Details |
| US3048840A | Communication system | Expired / Lapsed | 1956-03-06 | 1962-08-07 | 0 | Details |
| US3040314A | Collision course warning device | Expired / Lapsed | 1957-12-03 | 1962-06-19 | 0 | Details |
| US3039177A | Multiplanar printed circuit | Expired / Lapsed | 1957-07-29 | 1962-06-19 | 0 | Details |
| US3039024A | Voltage comparator | Expired / Lapsed | 1959-02-26 | 1962-06-12 | 0 | Details |
| US3035853A | Vehicle suspension and stabilizing system | Expired / Lapsed | 1958-12-10 | 1962-05-22 | 0 | Details |
| US3036291A | Data processing system | Expired / Lapsed | 1958-09-16 | 1962-05-22 | 0 | Details |
| US3029089A | Vehicle suspension and stabilizing system | Expired / Lapsed | 1959-05-07 | 1962-04-10 | 0 | Details |
| US3025514A | Collision avoidance system | Expired / Lapsed | 1958-01-10 | 1962-03-13 | 0 | Details |
| US3021514A | Voltage comparator | Expired / Lapsed | 1958-03-27 | 1962-02-13 | 0 | Details |
| US3014097A | Dial controlled intercommunication systems | Expired / Lapsed | 1959-03-31 | 1961-12-19 | 0 | Details |
| US3013119A | Decoder for line printer | Expired / Lapsed | 1959-01-27 | 1961-12-12 | 0 | Details |
| US3013150A | Diversity receiving system having separate phase angle indi… | Expired / Lapsed | 1956-11-09 | 1961-12-12 | 0 | Details |
| US3007138A | Code recognition circuit | Expired / Lapsed | 1958-08-21 | 1961-10-31 | 0 | Details |
| US3002087A | Self-powered radio transmitter | Expired / Lapsed | 1953-05-01 | 1961-09-26 | 0 | Details |
| US2997552A | Printed circuit distributor | Expired / Lapsed | 1959-09-01 | 1961-08-22 | 0 | Details |
| US2997408A | Process for producing photoconductive cadmium sulfide | Expired / Lapsed | 1958-05-21 | 1961-08-22 | 1 | Details |
| US2996711A | Direction finding system | Expired / Lapsed | 1958-11-07 | 1961-08-15 | 0 | Details |
| US2995934A | Apparatus to measure unbalance in gyroscopes | Expired / Lapsed | 1958-03-19 | 1961-08-15 | 0 | Details |
| US2996613A | Detector circuit | Expired / Lapsed | 1956-03-06 | 1961-08-15 | 0 | Details |
| US2993196A | Magnetic memory device | Expired / Lapsed | 1957-05-10 | 1961-07-18 | 0 | Details |
| US2992358A | Radiation translating device | Expired / Lapsed | 1954-03-03 | 1961-07-11 | 0 | Details |
| US2987135A | Vehicle steering system with automatic correcting means | Expired / Lapsed | 1958-12-23 | 1961-06-06 | 0 | Details |
| US2987706A | Signal detector | Expired / Lapsed | 1958-05-14 | 1961-06-06 | 0 | Details |
| US2987715A | Signal-character translator | Expired / Lapsed | 1958-04-16 | 1961-06-06 | 0 | Details |
| US2987712A | Fault alarm system | Expired / Lapsed | 1957-09-12 | 1961-06-06 | 0 | Details |
| US2985828A | Pulse width evaluating system | Expired / Lapsed | 1959-08-19 | 1961-05-23 | 0 | Details |
| US2985754A | Frequency responsive transmitterreceiver system | Expired / Lapsed | 1946-05-04 | 1961-05-23 | 0 | Details |
| US2979712A | Automatic echo pulse recapture circuit | Expired / Lapsed | 1954-11-12 | 1961-04-11 | 0 | Details |
| US2978699A | Radio repeating systems | Expired / Lapsed | 1944-08-28 | 1961-04-04 | 0 | Details |
| US2977535A | Automatic digital evaluator | Expired / Lapsed | 1958-08-20 | 1961-03-28 | 0 | Details |
| US2975275A | Combining system for diversity communication systems | Expired / Lapsed | 1958-05-22 | 1961-03-14 | 0 | Details |
| US2975367A | Maximum slope pulse detector | Expired / Lapsed | 1957-01-10 | 1961-03-14 | 0 | Details |
| US2971190A | Position finding system | Expired / Lapsed | 1945-02-24 | 1961-02-07 | 0 | Details |
| US2969018A | Quadrant homing system | Expired / Lapsed | 1957-05-01 | 1961-01-24 | 0 | Details |
| US2968769A | Frequency modulated oscillator system | Expired / Lapsed | 1958-09-04 | 1961-01-17 | 0 | Details |
| US2967908A | Telegraph communication systems with carrier monitoring | Expired / Lapsed | 1959-04-28 | 1961-01-10 | 0 | Details |
| US2968034A | Doppler frequency position fixing method | Expired / Lapsed | 1955-08-16 | 1961-01-10 | 0 | Details |
| US2965884A | Memory circuit | Expired / Lapsed | 1958-03-31 | 1960-12-20 | 0 | Details |
| US2962716A | Antenna array | Expired / Lapsed | 1957-06-21 | 1960-11-29 | 0 | Details |
| US2962714A | Radio signal separator system | Expired / Lapsed | 1953-01-14 | 1960-11-29 | 0 | Details |
| US2956183A | Voltage multiplier | Expired / Lapsed | 1957-08-01 | 1960-10-11 | 0 | Details |
| US2954700A | Rotation sensing device | Expired / Lapsed | 1958-12-16 | 1960-10-04 | 0 | Details |
| US2955159A | Narrow-band video communication system | Expired / Lapsed | 1958-10-01 | 1960-10-04 | 0 | Details |
| US2955199A | Radio diversity receiving system | Expired / Lapsed | 1958-08-05 | 1960-10-04 | 0 | Details |
| US2955260A | Construction of electrical devices | Expired / Lapsed | 1958-01-21 | 1960-10-04 | 0 | Details |
| US2955280A | Data processing transposition system | Expired / Lapsed | 1956-08-29 | 1960-10-04 | 0 | Details |
| US2952811A | Modulation synchronizing pulse generator | Expired / Lapsed | 1956-06-14 | 1960-09-13 | 0 | Details |
| US2951999A | Constant impedance attenuator | Expired / Lapsed | 1958-04-21 | 1960-09-06 | 0 | Details |
| US2951906A | Delay device | Expired / Lapsed | 1957-02-11 | 1960-09-06 | 0 | Details |
| US2951905A | Instantaneous type time compressors and expanders for pulse… | Expired / Lapsed | 1957-01-03 | 1960-09-06 | 0 | Details |
| US2951218A | Directional couplings | Expired / Lapsed | 1957-02-19 | 1960-08-30 | 0 | Details |
| US2950464A | Error detection systems | Expired / Lapsed | 1959-06-11 | 1960-08-23 | 0 | Details |
| US2947944A | Gated trigger predetermined binary counter | Expired / Lapsed | 1956-05-11 | 1960-08-02 | 0 | Details |
| US2945211A | Non-blocking link-access switching system | Expired / Lapsed | 1957-12-10 | 1960-07-12 | 0 | Details |
| US2945224A | Phase and amplitude correction system and navaglobe beacon … | Expired / Lapsed | 1957-07-08 | 1960-07-12 | 0 | Details |
| US2945094A | Pulse signalling system | Expired / Lapsed | 1954-09-07 | 1960-07-12 | 0 | Details |
| US2943321A | Course guidance system | Expired / Lapsed | 1958-01-06 | 1960-06-28 | 0 | Details |
| US2943324A | Dual frequency dual polarization horn antenna | Expired / Lapsed | 1957-11-01 | 1960-06-28 | 0 | Details |
| US2943318A | Pulse radar countermeasure | Expired / Lapsed | 1942-08-05 | 1960-06-28 | 0 | Details |
| US2941083A | System for separating and extracting related recorded infor… | Expired / Lapsed | 1958-01-10 | 1960-06-14 | 0 | Details |
| US2939910A | Distortion-correcting system | Expired / Lapsed | 1955-11-25 | 1960-06-07 | 0 | Details |
| US2938949A | Electronic marker generator | Expired / Lapsed | 1957-05-09 | 1960-05-31 | 0 | Details |
| US2938956A | Party line detector system | Expired / Lapsed | 1956-07-02 | 1960-05-31 | 0 | Details |
| US2938130A | Semi-conductor device for heat transfer utilization | Expired / Lapsed | 1957-09-27 | 1960-05-24 | 0 | Details |
| US2933903A | Cooling system for electronic apparatus | Expired / Lapsed | 1958-01-21 | 1960-04-26 | 0 | Details |
| US2934683A | Pressure resistant insulators for selenium rectifiers | Expired / Lapsed | 1957-11-01 | 1960-04-26 | 2 | Details |
| US2934653A | Readout system | Expired / Lapsed | 1957-03-07 | 1960-04-26 | 0 | Details |
| US2934707A | Multiar circuit | Expired / Lapsed | 1953-08-28 | 1960-04-26 | 0 | Details |
| US2930974A | Magnetic field detecting device | Expired / Lapsed | 1957-08-01 | 1960-03-29 | 0 | Details |
| US2930987A | Signal translation system | Expired / Lapsed | 1955-05-23 | 1960-03-29 | 0 | Details |
| US2928085A | Radio altimeter systems | Expired / Lapsed | 1957-02-06 | 1960-03-08 | 0 | Details |
| US2926304A | Frequency determining system | Expired / Lapsed | 1958-04-21 | 1960-02-23 | 0 | Details |
| US2926267A | Direct-current transistor switching amplifier circuit | Expired / Lapsed | 1955-03-10 | 1960-02-23 | 0 | Details |
| US2924822A | Azimuth receiver | Expired / Lapsed | 1958-05-05 | 1960-02-09 | 0 | Details |
| US2924706A | Synchronous detector system | Expired / Lapsed | 1957-10-10 | 1960-02-09 | 0 | Details |
| US2924783A | Wide band automatic frequency control systems | Expired / Lapsed | 1956-12-27 | 1960-02-09 | 0 | Details |
| US2924793A | Adjustable attenuator | Expired / Lapsed | 1956-03-09 | 1960-02-09 | 0 | Details |
| US2924820A | Aerial navigation beacon system | Expired / Lapsed | 1955-02-28 | 1960-02-09 | 0 | Details |
| US2922945A | Transistorized voltage regulators | Expired / Lapsed | 1956-03-30 | 1960-01-26 | 0 | Details |
| US2921232A | Automatic headlight system | Expired / Lapsed | 1957-04-18 | 1960-01-12 | 0 | Details |
| US2920291A | Signal transmission systems | Expired / Lapsed | 1956-03-06 | 1960-01-05 | 0 | Details |
| US2918533A | Register-translator crossbar telephone system | Expired / Lapsed | 1956-12-19 | 1959-12-22 | 0 | Details |
| US2916618A | Pulse detector responsive to both pulse amplitude and duty … | Expired / Lapsed | 1957-05-16 | 1959-12-08 | 0 | Details |
| US2916727A | Data processing system | Expired / Lapsed | 1955-05-10 | 1959-12-08 | 0 | Details |
| US2913711A | Signal control system | Expired / Lapsed | 1954-10-15 | 1959-11-17 | 0 | Details |
| US2912508A | Repeater station for a pulse multiplex system | Expired / Lapsed | 1955-09-08 | 1959-11-10 | 0 | Details |
| US2912686A | Distance measuring equipment | Expired / Lapsed | 1955-08-29 | 1959-11-10 | 0 | Details |
| US2912506A | Communication system | Expired / Lapsed | 1955-03-09 | 1959-11-10 | 0 | Details |
| US2908836A | Charge storage device | Expired / Lapsed | 1958-03-31 | 1959-10-13 | 0 | Details |
| US2906873A | Discriminator circuit | Expired / Lapsed | 1956-02-23 | 1959-09-29 | 0 | Details |
| US2904641A | Negative-impedance repeater using a transistor amplifier | Expired / Lapsed | 1955-11-29 | 1959-09-15 | 0 | Details |
| US2894187A | Synchronization of motor rotated elements | Expired / Lapsed | 1956-07-09 | 1959-07-07 | 0 | Details |
| US2883588A | Bi-directional chain of counting relays | Expired / Lapsed | 1955-04-04 | 1959-04-21 | 0 | Details |
| US2881331A | Magnetic switching circuit | Expired / Lapsed | 1957-05-23 | 1959-04-07 | 0 | Details |
| US2878469A | Landing and traffic control system | Expired / Lapsed | 1953-10-30 | 1959-03-17 | 0 | Details |
| US2877376A | Phosphor screen device | Expired / Lapsed | 1955-09-06 | 1959-03-10 | 0 | Details |
| US2877371A | Information display device | Expired / Lapsed | 1955-08-16 | 1959-03-10 | 0 | Details |
| US2870259A | Synchronous clamping | Expired / Lapsed | 1955-10-21 | 1959-01-20 | 0 | Details |
| US2867782A | Microwave lines and high q filters | Expired / Lapsed | 1955-05-13 | 1959-01-06 | 0 | Details |
| US2866970A | Pulse communication system | Expired / Lapsed | 1956-05-31 | 1958-12-30 | 0 | Details |
| US2866900A | Nondispersive infrared analyzer | Expired / Lapsed | 1955-12-19 | 1958-12-30 | 0 | Details |
| US2866899A | Electronic spectroanalysis computer | Expired / Lapsed | 1955-12-12 | 1958-12-30 | 0 | Details |
| US2866161A | Frequency shift keying circuit | Expired / Lapsed | 1956-09-25 | 1958-12-23 | 0 | Details |
| US2866167A | Microwave switch | Expired / Lapsed | 1955-05-26 | 1958-12-23 | 0 | Details |
| US2864020A | Electron discharge device | Expired / Lapsed | 1956-10-16 | 1958-12-09 | 0 | Details |
| US2861257A | Power line relaying | Expired / Lapsed | 1953-09-22 | 1958-11-18 | 0 | Details |
| US2861128A | Multiplex branch repeater station | Expired / Lapsed | 1952-11-12 | 1958-11-18 | 0 | Details |
| US2858438A | Voltage comparators | Expired / Lapsed | 1956-07-02 | 1958-10-28 | 0 | Details |
| US2852416A | Method and apparatus for manufacturing travelling wave elec… | Expired / Lapsed | 1955-06-03 | 1958-09-16 | 2 | Details |
| US2852773A | Navigation receiving system | Expired / Lapsed | 1955-02-28 | 1958-09-16 | 0 | Details |
| US2848648A | Bar graph oscilloscopes | Expired / Lapsed | 1956-05-09 | 1958-08-19 | 0 | Details |
| US2848649A | Electromagnetic wave generator | Expired / Lapsed | 1952-01-24 | 1958-08-19 | 0 | Details |
| US2845617A | Pulse-count coder | Expired / Lapsed | 1956-05-17 | 1958-07-29 | 0 | Details |
| US2841719A | Diode gate and its control circuit | Expired / Lapsed | 1955-01-26 | 1958-07-01 | 0 | Details |
| US2838600A | Focusing adjusting system | Expired / Lapsed | 1952-09-22 | 1958-06-10 | 0 | Details |
| US2832827A | Signal level coder | Expired / Lapsed | 1952-10-02 | 1958-04-29 | 0 | Details |
| US2831057A | Automatic focus adjuster | Expired / Lapsed | 1952-09-22 | 1958-04-15 | 0 | Details |
| US2829346A | Pulse generator | Expired / Lapsed | 1956-11-23 | 1958-04-01 | 0 | Details |
| US2829282A | Pulse generator | Expired / Lapsed | 1956-05-17 | 1958-04-01 | 0 | Details |
| US2825755A | Montage amplifier | Expired / Lapsed | 1952-03-28 | 1958-03-04 | 0 | Details |
| US2820909A | Delay line pulse shaper | Expired / Lapsed | 1956-09-12 | 1958-01-21 | 0 | Details |
| US2819452A | Microwave filters | Expired / Lapsed | 1952-05-08 | 1958-01-07 | 0 | Details |
| US2818511A | Radiation detector | Expired / Lapsed | 1953-10-13 | 1957-12-31 | 0 | Details |
| US2817082A | Continuous wave beacon system | Expired / Lapsed | 1954-06-04 | 1957-12-17 | 0 | Details |
| US2815486A | Electrical signal translating system | Expired / Lapsed | 1952-05-22 | 1957-12-03 | 0 | Details |
| US2808526A | Cathode ray amplifier | Expired / Lapsed | 1955-01-27 | 1957-10-01 | 0 | Details |
| US2807715A | Decoder for pulse code modulation systems | Expired / Lapsed | 1950-10-27 | 1957-09-24 | 0 | Details |
| US2803821A | Radio navigation receiver | Expired / Lapsed | 1954-08-10 | 1957-08-20 | 0 | Details |
| US2800654A | Radio location system | Expired / Lapsed | 1954-12-21 | 1957-07-23 | 0 | Details |
| US2797261A | Carrier telegraph receiver | Expired / Lapsed | 1954-04-22 | 1957-06-25 | 0 | Details |
| US2797390A | Microwave transmission lines | Expired / Lapsed | 1953-01-09 | 1957-06-25 | 0 | Details |
| US2795775A | Pulse repetition rate selector | Expired / Lapsed | 1955-07-01 | 1957-06-11 | 0 | Details |
| US2795650A | Compandor control system | Expired / Lapsed | 1952-04-23 | 1957-06-11 | 0 | Details |
| US2790079A | Multi-channel radio equipment | Expired / Lapsed | 1955-08-18 | 1957-04-23 | 0 | Details |
| US2790169A | Antenna | Expired / Lapsed | 1949-04-18 | 1957-04-23 | 0 | Details |
| US2787659A | Combination telephone and dictation system | Expired / Lapsed | 1955-05-20 | 1957-04-02 | 0 | Details |
| US2779933A | Complex pulse communication system | Expired / Lapsed | 1950-03-29 | 1957-01-29 | 0 | Details |
| US2776426A | Moving target range tracking unit | Expired / Lapsed | 1952-11-03 | 1957-01-01 | 0 | Details |
| US2773992A | Display amplifier and method of making same | Expired / Lapsed | 1953-06-17 | 1956-12-11 | 0 | Details |
| US2774038A | Phase discriminator | Expired / Lapsed | 1952-10-08 | 1956-12-11 | 0 | Details |
| US2771565A | Traveling wave tubes | Expired / Lapsed | 1952-08-19 | 1956-11-20 | 0 | Details |
| US2760169A | Microwave filters | Expired / Lapsed | 1951-08-01 | 1956-08-21 | 0 | Details |
| US2758278A | Phase comparator | Expired / Lapsed | 1952-02-12 | 1956-08-07 | 0 | Details |
| US2757246A | Compressor-expander volume-range control device | Expired / Lapsed | 1952-05-27 | 1956-07-31 | 0 | Details |
| US2755447A | Radio frequency coupling devices | Expired / Lapsed | 1954-10-29 | 1956-07-17 | 0 | Details |
| US2753556A | Omnirange beacon system | Expired / Lapsed | 1953-07-20 | 1956-07-03 | 0 | Details |
| US2753455A | Frequency divider | Expired / Lapsed | 1952-11-07 | 1956-07-03 | 0 | Details |
| US2753554A | Omnirange beacon system | Expired / Lapsed | 1952-04-03 | 1956-07-03 | 0 | Details |
| US2741668A | Stabilized amplifier | Expired / Lapsed | 1952-11-21 | 1956-04-10 | 0 | Details |
| US2738381A | Telegraph signal-operated carrier off and on system | Expired / Lapsed | 1952-08-01 | 1956-03-13 | 0 | Details |
| US2738463A | Pulse code expander | Expired / Lapsed | 1952-02-01 | 1956-03-13 | 0 | Details |
| US2729793A | Inductive coupling circuits for pulses | Expired / Lapsed | 1951-10-20 | 1956-01-03 | 0 | Details |
| US2729741A | Diversity reception system | Expired / Lapsed | 1951-10-10 | 1956-01-03 | 0 | Details |
| US2726173A | Method and apparatus for measuring film thickness | Expired / Lapsed | 1953-04-03 | 1955-12-06 | 2 | Details |
| US2721312A | Microwave cable | Expired / Lapsed | 1951-06-30 | 1955-10-18 | 0 | Details |
| US2718638A | Signal correlation radio receiver | Expired / Lapsed | 1950-01-20 | 1955-09-20 | 0 | Details |
| US2717992A | Transient surge detector | Expired / Lapsed | 1951-10-20 | 1955-09-13 | 0 | Details |
| US2715727A | Omnidirectional radio range system | Expired / Lapsed | 1951-03-14 | 1955-08-16 | 0 | Details |
| US2712069A | Electromagnetic wave generation | Expired / Lapsed | 1948-12-03 | 1955-06-28 | 1 | Details |
| US2706773A | Pulse repeaters | Expired / Lapsed | 1943-03-26 | 1955-04-19 | 0 | Details |
| US2699464A | Fundamental pitch detector system | Expired / Lapsed | 1952-05-22 | 1955-01-11 | 0 | Details |
| US2688738A | Receiver for remote supervisory and control systems | Expired / Lapsed | 1952-12-26 | 1954-09-07 | 0 | Details |
| US2685052A | Condenser-timed relay interrupter | Expired / Lapsed | 1951-05-29 | 1954-07-27 | 0 | Details |
| US2682018A | Wrap-around assembly for electrical components | Expired / Lapsed | 1951-07-14 | 1954-06-22 | 0 | Details |
| US2671896A | Random impulse system | Expired / Lapsed | 1942-12-18 | 1954-03-09 | 0 | Details |
| US2662977A | Radio impulse system for oscillograph calibration | Expired / Lapsed | 1950-03-23 | 1953-12-15 | 0 | Details |