Patent Database Search Results: AUDIO AND AREA AND DETECTION AND SYSTEM in US Patent Collection

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(((AUDIO AND AREA) AND DETECTION) AND SYSTEM): 42066 patents.
Hits 42051 through 42066 out of 42066

	PAT. NO.	Title
42051	3,577,008	AUTOMATIC FREQUENCY CONTROL APPARATUS
42052	3,576,463	LINE STABILIZED VERTICAL DEFLECTION SYSTEM
42053	3,573,817	MONITORING SYSTEM
42054	3,573,783	PROXIMITY SENSOR
42055	3,573,463	LASER HETERODYNE TRANSCEIVER COMMUNICATION SYSTEM WITH AFC
42056	3,573,379	COMMUNICATIONS SYSTEM WITH FREQUENCY AND TIME DIVISION TECHNIQUES
42057	3,569,940	REMOTE ALARM FOR VISUAL DISPLAY TERMINALS
42058	3,569,924	ULTRASONIC DETECTION SYSTEM
42059	3,568,161	VEHICLE LOCATOR SYSTEM
42060	3,568,048	THREE COIL SYSTEM FOR GEOPHYSICAL PROSPECTING UTILIZING MAGNETIC TIME TRANSIENTS
42061	3,567,851	ELECTRONIC SYSTEM FOR FAST TRANSMISSION OF TWO TONALITIES FIXED IMAGES
42062	3,567,048	REMOTE AUTOMATIC TRIPPER OPERATION AND CONTROL BY LOW BIN DETERMINATION
42063	3,564,132	APPARATUS FOR CONTROLLING THE PASSAGE OF PERSONS AND OBJECTS BETWEEN TWO AREAS UTILIZING CLOSED CIRCUIT TELEVISION
42064	3,562,431	ASYNCHRONOUS COMMUNICATIONS SYSTEM
42065	3,562,417	SIGNAL-TRANSLATING FILTER NETWORK FOR A TELEVISION RECEIVER
42066	3,553,386	TELEPHONE SUBSCRIBER PAGING ARRANGEMENT