U.S. federal trademark · Serial No. 73104306 · Reg. No. 1109267
AUXILIARY DOMESTIC WATER HEATING SYSTEMS WHICH UTILIZE WASTE HEAT FROM PRIMARY DOMESTIC HEATERS, WHICH SYSTEMS PRIMARILY INCLUDE A FIN-TYPE COPPER HEAT EXCHANGER WHICH UTILIZES COMBUSTION GASES AS THE HEATING MEDIUM, A WATER STORAGE VESSEL, AND FLUID FLOWING PIPING FOR INTERCONNECTING THE VESSEL AND HEAT EXCHANGER
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