73379777
Aug 13, 1982
Nov 29, 1983
Alarm Systems Comprising Intrusion Detectors, Smoke Detectors, Hold-Up Switches, Control Units, Strobe Lights, Revolving Beacons, Alarm Bells, Sirens, and Television Monitors; Energy Control Units Comprised of a Central Control Panel and Monitoring Units for Scheduling and Cycling Lighting, Heating, Ventilating and Air Conditioning Equipment at Predetermined Times
Electrical and Scientific ApparatusInstallation, Maintenance and Rendering Reports in Connection with Alarm Systems, Recording Door Lock Systems and Energy Management Systems
Building Construction and Repair