JC
HUMIDISTATS; THERMOSTATS; THERMOMETERS; SENSORS FOR TEMPERATURE, HUMIDITY, PRESSURE, FIRE, AND SMOKE; INDICATORS FOR TEMPERATURE, HUMIDITY, PRESSURE, FIRE, AND SMOKE; FIRE DETECTION SYSTEMS, COMPRISING, VARIOUSLY, IONIZATION DETECTORS, AIR DUCT AND FILTER DUCT IONIZATION DETECTORS, FLAME DETECTORS, DETECTOR RELEASING UNITS, THERMAL DETECTORS, FIRE INDICATING UNITS, CONTROL PANELS, ANNUNCIATORS, BELLS, ALARMS, FIRE-DOOR HOLDERS, CEILING FIXTURES FOR DETECTORS, ALARM LAMPS, EMERGENCY POWER SUPP...
Expired · October 6, 1971 · 72404444 ·