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Browse by Date |
| Patent Number |
Title Of Patent |
Date Issued |
| 4258372 |
Small clearance retention apparatus |
Mar. 24, 1981 |
| 4258371 |
Image recording apparatus |
Mar. 24, 1981 |
| 4258370 |
Jet drop printer |
Mar. 24, 1981 |
| 4258369 |
Pen recorder for enabling a recording pen to record characters |
Mar. 24, 1981 |
| 4258368 |
Safety means for preventing the automatic restart of a motor |
Mar. 24, 1981 |
| 4258367 |
Light sensitive jet inks |
Mar. 24, 1981 |
| 4258366 |
Multifrequency broadband polarized horn antenna |
Mar. 24, 1981 |
| 4258365 |
Around-the-mast rotary annular antenna feed coupler |
Mar. 24, 1981 |
| 4258364 |
Display device having adjoining display elements, and a method of producing the display device |
Mar. 24, 1981 |
| 4258363 |
Phased array radar |
Mar. 24, 1981 |
| 4258362 |
Phase coherent tracker of an arbitrary number of signals |
Mar. 24, 1981 |
| 4258361 |
Display system having modified screen format or layout |
Mar. 24, 1981 |
| 4258360 |
Optical smoke detector |
Mar. 24, 1981 |
| 4258359 |
Portable protective device |
Mar. 24, 1981 |
| 4258358 |
Door opening sensing and alarm producing device |
Mar. 24, 1981 |
| 4258357 |
Alarm signalling systems |
Mar. 24, 1981 |
| 4258356 |
Multi bar encoding apparatus utilizing acoustic energy |
Mar. 24, 1981 |
| 4258355 |
Digital to analogue converters |
Mar. 24, 1981 |
| 4258354 |
Portable alarm device |
Mar. 24, 1981 |
| 4258353 |
Vehicle acceleration/deceleration warning system |
Mar. 24, 1981 |
| 4258352 |
Control device for vehicle locks |
Mar. 24, 1981 |
| 4258351 |
System for collection and transmission of road traffic information |
Mar. 24, 1981 |
| 4258350 |
Arrangement of plug-in type fuses on a mounting board |
Mar. 24, 1981 |
| 4258349 |
Double-pole rocker switch with thermal protection |
Mar. 24, 1981 |
| 4258348 |
Current measuring transformer |
Mar. 24, 1981 |
| 4258347 |
Magnet coil |
Mar. 24, 1981 |
| 4258346 |
Magnetically actuated digital switch |
Mar. 24, 1981 |
| 4258345 |
Circuit interrupter with magnetic arc stretcher |
Mar. 24, 1981 |
| 4258344 |
Small-sized power relay |
Mar. 24, 1981 |
| 4258343 |
Unitized combination starter |
Mar. 24, 1981 |
| 4258342 |
Elastic surface wave device |
Mar. 24, 1981 |
| 4258341 |
Feed forward passive coupling system and method |
Mar. 24, 1981 |
| 4258340 |
Amplitude equalizer |
Mar. 24, 1981 |
| 4258339 |
Lumped circuit circulator with adjustable band widening circuit |
Mar. 24, 1981 |
| 4258338 |
Pulse generator producing short duration high current pulses for application to a low impedance ... |
Mar. 24, 1981 |
| 4258337 |
Stabilized output power oscillator |
Mar. 24, 1981 |
| 4258336 |
Pulsed ring laser fiber gyro |
Mar. 24, 1981 |
| 4258335 |
Gas laser |
Mar. 24, 1981 |
| 4258334 |
Noble gas-halogen transfer laser method and means |
Mar. 24, 1981 |
| 4258333 |
Frequency synthesizer having a loop filter with a high cut-off frequency |
Mar. 24, 1981 |
| 4258332 |
Loudspeaker amplifier |
Mar. 24, 1981 |
| 4258331 |
Differential amplifier |
Mar. 24, 1981 |
| 4258330 |
Differential current amplifier |
Mar. 24, 1981 |
| 4258329 |
Noise suppression system |
Mar. 24, 1981 |
| 4258328 |
Feed forward microwave amplifier for communication systems |
Mar. 24, 1981 |
| 4258327 |
Detector circuit with integrating feedback means |
Mar. 24, 1981 |
| 4258326 |
Capacitive detection of absent and/or double sheets in the sheet transport path of a printing ma... |
Mar. 24, 1981 |
| 4258325 |
Thermostat and method of testing thereof |
Mar. 24, 1981 |
| 4258324 |
Signal conditioning circuit for magnetic sensing means |
Mar. 24, 1981 |
| 4258323 |
Cathodic survey apparatus |
Mar. 24, 1981 |
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