73178224
Jul 14, 1978
May 20, 1980
RADIO RECEIVERS, RADIO TRANSMITTERS, RADIO OPERATED GATE AND DOOR CONTROLS, RADIO OPERATED ALARMS AND WARNING SIGNALS, RADIO CONTROLLED SWITCHES, AND ACCESSORY EQUIPMENT-NAMELY, POWER SUPPLIES, INTERCONNECTING POWER CABLES, ANTENNAS, ANTENNA CABLES, ANTENNA SWITCHES, ANTENNA RELAYS AND ANTENNA COILS
Electrical and Scientific Apparatus