11 ELECTRIC HEATERS FOR COMMERCIAL USE; FEED WATER HEATERS; INDUSTRIAL BOILERS; DIRECT FIRED PROCESS HEATERS; THERMAL FLUID SYSTEMS, NAMELY THERMAL FLUID HEATERS; WASTE HEAT RECOVERY EQUIPMENT, NAMELY INDUSTRIAL BOILERS FOR HEAT RECOVERY; AIR HEATERS; HEAT PIPE EXCHANGERS USED TO PREHEAT COMBUSTION AIR FOR FIRED PROCESS HEATERS, INDUSTRIAL BOILERS, AND CENTRAL STATION BOILERS; COMBUSTION CHAMBERS; PLUMBING FITTINGS, NAMELY SCREW-ON PLUG CLOSURES; MULTI-WALL VESSELS IN THE NATURE OF HEAT EXCHANGERS THAT ARE NOT PARTS OF MACHINES; ; SEMI-FABRICATED METAL MACHINE PARTS, NAMELY, DIE HEADS, DISHED ENDS, BOILER VESSELS AND FLANGES; HEAT EXCHANGERS USED TO PREHEAT COMBUSTION AIR FOR FIRED PROCESS HEATERS, INDUSTRIAL BOILERS, AND CENTRAL STATION BOILERS; PRESSURE VESSELS IN THE NATURE OF CONTAINERS DESIGNED TO HOLD GASES OR LIQUIDS AT A PRESSURE DIFFERENT FROM THE AMBIENT PRESSURE; PROCESS EQUIPMENT, NAMELY TANKS, COLUMNS, AND PIPING FOR USE IN BOILERS AND INDUSTRIAL HEATING SYSTEMS; ROTATING EQUIPMENT, NAMELY ELECTRIC FANS AND AIR AND GAS BLOWERS; MECHANICAL EQUIPMENT NAMELY, PULP MILL WASHERS, CENTRIFUGES, PUMPS, MIXERS, AND SHAFTS; ELECTROLYTIC DEVICES SUCH AS CHLORINE AND CHLORATE ANODES AND CELLS AND COPPER STARTER SHEET CATHODES; CHEMICAL TANK; STEAM SURFACE CONDENSERS; ROUND TUBE RADIATORS NOT FOR MOTORS ENGINES; ONCE THROUGH STEAM GENERATORS; HEAT PUMPS
Trademark: 78703368
