72163631
Feb 28, 1963
Jul 28, 1964
ELECTRONIC COUNTERMEASURES APPARATUS; ELECTRONIC ANTI-SUBMARINE WARFARE APPARATUS-NAMELY, RADIOSONIC BUOYS AND ASSOCIATED EQUIPMENT, RADIO TRANSMITTERS AND RECEIVERS FOR USE THEREWITH, UNDERWATER ELECTROMAGNETIC AND SONIC SENSORS, UNDERWATER RADAR DETECTION DEVICES, BATTERIES AND FUEL CELLS; RADAR APPARATUS; ELECTRONIC RECONNAISSANCE APPARATUS; AND PARTS THEREOF
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