U.S. federal trademark · Serial No. 73005086 · Reg. No. 1015214
HEAT TRANSFER DEVICES, [ THERMAL MACHINES, ] AND HEAT EXCHANGERS-NAMELY, COOLERS FOR AIR AND GASES, HEAT EXCHANGERS FOR HEATING AND COOLING FLUIDS, AIR HEATERS, [ FEED WATER HEATERS, ] AND FUEL OIL HEATING SYSTEMS
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