73295208
Feb 2, 1981
INSTALLATIONS FOR LIGHTING, HEATING, STEAM GENERATING, COOKING, REFRIG ERATING, DRYING, VENTILATING, WATER SUPPLY AND SANITARY PURPOSES, INCL UDINGPLANTS FOR THERMAL TREATMENT OR ORES, MELTING FURNACES, HEATING DEVICES, BURNERS, INCLUDING PLASMAGENERATORS, CONVERTERS, COOLING ELEM ENTS, REACTORS,MIXING VESSELS, MIXING CHAMBERS, BURNINGCHAMBERS
Environmental Control Apparatus