72366392
Jul 27, 1970
Apr 11, 1972
ELECTRIC FIRE ALARM SYSTEMS, BURGLAR ALARM SYSTEMS, NURSE CALL SYSTEMS FOR HOSPITAL USE, SPRINKLER SUPERVISORY SYSTEMS, WATCHMAN SERVICE SYSTEMS AND OTHER PLANT SUPERVISORY AND SECURITY SYSTEMS, CLOSED CIRCUIT AUDIO-COMMUNICATION AND SIGNALLING SYSTEMS, INDUSTRIAL PROCESS MONITORING AND CONTROL SYSTEMS, DATA LOGGING SYSTEMS, PARTS OF ALL SUCH SYSTEMS, CODE TRANSMITTERS AND RECEIVERS AND PARTS THEREOF
Housewares and Glass