73550032
Jul 25, 1985
Oct 21, 1986
FIRE DETECTION SYSTEMS COMPRISING [ IONIZATION DETECTORS, ] ULTRA-VIOLET, INFRA-RED [ AND PHOTO ELECTRIC ] DETECTORS AND CONTROL PANELS, THE ABOVE NAMED PRODUCTS SOLD TOGETHER AS A UNIT OR AS SEPARATE ITEMS FOR FIRE DETECTION SYSTEMS
Electrical and Scientific Apparatus