STRUTHERS

PULP REFINING MACHINES IN THE NATURE OF PULP MILL WASHERS; CENTRIFUGES; PNEUMATIC PUMPS; SHAFTS FOR PUMPS; GAS COMPRESSORS; MACHINE PARTS, NAMELY AIR AND GAS COOLERS; MOISTURE SEPARATOR REHEATERS; MACHINE PARTS, NAMELY CENTRIFUGAL COMPRESSOR INTERCOOLERS AND AFTERCOOLERS; MACHINE PARTS, NAMELY ENGINE INTERCOOLERS; ROUND TUBE RADIATORS FOR MOTORS AND ENGINES; AUTOMATED MANIPULATOR ARMS AND STRUCTURAL FRAMES THEREFORE

ELECTRIC CONTROLS FOR COMBUSTION CHAMBERS; THERMOSTATS; ELECTROLYTIC DEVICES, NAMELY, CHLORINE AND CHLORATE ANODES AND CELLS AND COPPER START SHEET CATHODES

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

METAL FABRICATION AND FINISHING SERVICES; CONTRACT MANUFACTURING FOR OTHERS IN THE FIELD OF FEEDWATER HEATERS, STEAM SURFACE CONDENSERS AND POWER PLANT HEAT EXCHANGERS; CUSTOM CONSTRUCTION OF FEEDWATER HEATERS, STEAM SURFACE CONDENSERS AND POWER PLANT HEAT EXCHANGERS

ENGINEERING; PROCESS DESIGN FOR OTHERS IN THE FIELD OF INDUSTRIAL HEATING AND COOLING; MECHANICAL ENGINEERING; FINITE-ELEMENT THERMAL AND STRESS ANALYSIS IN THE FIELD OF INDUSTRIAL HEATING AND COOLING; CHEMICAL REACTION ENGINEERING; DESIGN OF ELECTRICAL WIRING SYSTEMS FOR OTHERS; INSTRUMENTATION AND CONTROL SYSTEM ENGINEERING; FOUNDATION AND STRUCTURAL DESIGN FOR OTHERS IN THE FIELD OF INDUSTRIAL HEATING AND COOLING; SOFTWARE DEVELOPMENT; FIELD SERVICE ENGINEERING; FLUID PUMPING AND PIPING DESIGN FOR OTHERS; DESIGN, MANUFACTURING, PROCESSING AND FABRICATION SERVICES FOR METAL AND ALLOY EQUIPMENT AND PARTS IN THE FIELD OF INDUSTRIAL HEATING AND COOLING; RESEARCH AND DEVELOPMENT OF FEEDWATER HEATERS, STEAM SURFACE CONDENSERS AND POWER PLANT HEAT EXCHANGERS