U.S. federal trademark · Serial No. 72299432 · Reg. No. 0868679
COMBUSTION EQUIPMENT-NAMELY, OIL BURNERS, GAS BURNERS, COUNTERFLOW EXHARST STEAM FUEL FEED HEATERS, RECUPERATORS OR AIR PREHEATHERS, HOT GAS FANS, AND COLD AIR FANS (NOT ESSENTIALLY ELECTRICAL)
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