U.S. federal trademark · Serial No. 72320756 · Reg. No. 0883354
HEATING FURNACES USING SOLID, GASEOUS OR LIQUID OR COMBINATION LIQUID AND GASEOUS FUELS; DIRECT FIRED MAKE-UP AIR HEATERS USING GASEOUS FUELS; AND COMBINATION HEATING-COOLING UNITS USING LIQUID OR GASEOUS FUELS FOR HEATING AND ELECTRICITY FOR COOLING
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