73815080
Jul 26, 1989
Jun 16, 1992
SPARK DETECTION AND EXTINGUISHING SYSTEMS FOR PREVENTING FIRES AND EXPLOSIONS IN INDUSTRIAL PLANTS AND EQUIPMENT; NAMELY, AN ASSEMBLY, SOLD AS A UNIT, COMPRISING A SPARK DETECTOR, ELECTRONIC CIRCUIT CONTROLS, WATER PUMP, WATER RESERVOIR TANK AND STRUCTURAL PARTS THEREOF
Electrical and Scientific Apparatus