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Patent Number Title Of Patent Date Issued
4910500 Electronic cattle group system Mar. 20, 1990
4910499 Tag and method of making same Mar. 20, 1990
4910498 Swimming pool safety alarm Mar. 20, 1990
4910497 Closure alarm for containment chambers for dangerous materials Mar. 20, 1990
4910496 Direction indicating flasher device for vehicles with filament failure indication Mar. 20, 1990
4910495 Dipstick with automatic warning device Mar. 20, 1990
4910494 Automotive vehicle control system Mar. 20, 1990
4910493 Security systems Mar. 20, 1990
4910492 Electric laminar resistor and method of making same Mar. 20, 1990
4910491 Electrical apparatus used with a potentiometer and/or variable resistance element Mar. 20, 1990
4910490 End terminal seal for an electric fuse Mar. 20, 1990
4910489 Gas tube fail-safe device for telephone protector modules Mar. 20, 1990
4910488 Rotary variable differential transformer with eccentric rotor core Mar. 20, 1990
4910487 Bistable magnet Mar. 20, 1990
4910486 Electromagnetic drive actuator Mar. 20, 1990
4910485 Multiple circuit breaker with double break rotary contact Mar. 20, 1990
4910484 Electromagnetic relay having silencing effect Mar. 20, 1990
4910483 Acoustic surface wave filter device with asymmetric transducers and method of manufacturing same Mar. 20, 1990
4910482 AC line filter Mar. 20, 1990
4910481 Branching filter Mar. 20, 1990
4910480 Hierarchical current amplifier Mar. 20, 1990
4910479 Automatic gain control device for use in an optical memory device Mar. 20, 1990
4910478 Amplifier circuit and method of controlling output power thereof Mar. 20, 1990
4910477 Bridge-type linear amplifier with wide dynamic range and high efficiency Mar. 20, 1990
4910476 High-frequency amplifier with automatic neutrodyning circuit Mar. 20, 1990
4910475 Pole grouping for stepping motor Mar. 20, 1990
4910474 Method and apparatus for generating phase and amplitude modulated signals Mar. 20, 1990
4910473 Digitally temperature-compensated oscillator Mar. 20, 1990
4910472 Multivibrator circuit employing field effect devices Mar. 20, 1990
4910471 CMOS ring oscillator having frequency independent of supply voltage Mar. 20, 1990
4910470 Digital automatic frequency control of pure sine waves Mar. 20, 1990
4910469 Demodulator for sampled data FM signals Mar. 20, 1990
4910468 Dual polarization demodulation with cross polarization cancellation Mar. 20, 1990
4910467 Method and apparatus for decoding a quadrature modulated signal Mar. 20, 1990
4910466 Selecting means for selecting a plurality of information Mar. 20, 1990
4910465 Phase detector Mar. 20, 1990
4910464 Proximity detector Mar. 20, 1990
4910463 Halogen monitoring apparatus Mar. 20, 1990
4910462 Etched Z-axis gradient coils for NMR system Mar. 20, 1990
4910461 Magnetic resonance imaging apparatus including an interference-poor r.f. coil Mar. 20, 1990
4910460 Method and apparatus for mapping eddy currents in magnetic resonance imaging Mar. 20, 1990
4910459 Magnetic tile sensor with a non-magnetic case having a flange and a cover cold welded thereon Mar. 20, 1990
4910458 Electro-optic sampling system with dedicated electro-optic crystal and removable sample carrier Mar. 20, 1990
4910457 Water resistance load system Mar. 20, 1990
4910456 Electronic watt-hour meter with combined multiplier/integrator circuit Mar. 20, 1990
4910455 Non-intrusive current measuring circuit Mar. 20, 1990
4910454 System for electrical signal sampling with ultrashort optical pulses Mar. 20, 1990
4910453 Multi-probe grouping system with nonlinear error correction Mar. 20, 1990
4910452 High frequency AC magnetic devices with high efficiency Mar. 20, 1990
4910451 Voltage regulator for generator of an automobile Mar. 20, 1990
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