73144758
Oct 17, 1977
Jan 30, 1979
GENERAL ALARM SYSTEM FOR MONITORING CONDITIONS IN BUILDINGS AND PROVIDING SIGNALS TO CONTROL FUNCTIONS IN THE BUILDINGS FOR THE SAFETY OF PERSONS AND PROPERTY COMPRISING DECODERS, ANNUNCIATORS, FIRE AND TROUBLE INDICATORS, POWER REGULATORS, POWER SUPPLIES, ALARM SIGNAL GENERATORS AND SUPERVISORY CONTROLS
Electrical and Scientific Apparatus