72199300
Aug 5, 1964
Oct 19, 1965
MICROWAVE, THERMAL, OPTICAL, INFRARED, ULTRAVIOLET, AND RADIO FREQUENCY RECEPTOR AND SENSING ELEMENTS; COMPONENTS FOR TRACKING RADIOMETERS AND CONTROL APPARATUS-NAMELY, POWER SUPPLIES, MODULATORS, PHASE-SENSITIVE RECTIFIERS, OPERATIONAL AMPLIFIERS AND SERVO AMPLIFIERS; AND SEMICONDUCTOR MATERIALS
Housewares and Glass