73469315
Mar 8, 1984
Jan 28, 1986
PULPING MACHINES FOR PAPER, PAPER-MAKING MACHINES, DIESEL ENGINES NOT FOR LAND VEHICLES, WINDMILLS, ELECTRIC GENERATORS RUN BY WIND POWER, ELECTRIC GENERATORS RUN BY WAVE AND TIDE ENERGY, MACHINE HOUSINGS, PULVERIZING MACHINES, PISTONS FOR CYLINDERS, PISTONS FOR ENGINES, AND CLEANING MACHINES FOR INDUSTRIAL FURNACES COMPRISING MECHANICAL SCRAPERS AND SLEEVES
MachineryMONITORS AND CONTROLS FOR COMBUSTION IN INDUSTRIAL FURNACES; MONITORING EQUIPMENT FOR WATCHING INTENSITY OF COMBUSTION; SENSORS FOR TEMPERATURE PRESSURE, AND AMOUNT OF AIR, AND VALVES FOR VARYING THE SUPPLY OF FUEL AND AIR
Electrical and Scientific ApparatusSTEAM AND HOT WATER GENERATING BOILERS, CHEMICAL RECOVERY BOILERS, SUPERHEATERS AND HEAT PUMPS
Environmental Control Apparatus