75306816
Jun 11, 1997
alarm and security systems comprising control modules and central controllers for electrical and electronic apparatus, electrical, mechanical and electronic burglar, fire and intrusion alarms, fire and smoke detectors, automatic safety lights, timing controls for alarm and security systems and component parts therefor, open and closed circuit monitors, switches and sensors, electric magnetic contacts, relays, transmitters, receivers and processors of electronic signals
Electrical and Scientific Apparatus