73419613
Apr 1, 1983
Jan 22, 1985
Security and Surveillance Systems, Comprising, Closed Circuit Video Cameras, Optical Links, Monitors; Video Tape Recorders; Micro Processor Switches and Computers; Card Readers and Computers; Security Gate Controls; Alarms; Intrusion and Metal Detectors; Data Links and Transmitters; Energy and Fire Sensors and Controls; Intercom and Electronic Pagers for Communication
Electrical and Scientific Apparatus