U.S. federal trademark · Serial No. 79104739 · Reg. No. 4231939
Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes, namely, heating, ventilating, air conditioning, and refrigeration units, all for industrial and commercial use; electric heating and ventilating fans for industrial and commercial use; air handlers; heaters for commercial and industrial purposes; dampers, namely, control devices used in air ducts to regulate the flow of air
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