U.S. federal trademark · Serial No. 71685485 · Reg. No. 319913
PIPINGS AND DUCTS CARRYING HOT GASES, WALLS AND ROOFS FOR INDUSTRIAL FURNACES AND STEAM GENERATORS AND OTHER VESSELS FOR HEATING PURPOSES, SUSPENDED CEILINGS FOR FURNACES FOR PULVERIZED COAL OR HAVING TRAVELLING OR GRADUATED GRATES; AND SUSPENDED CEILINGS FOR OTHER COAL, GAS AND OIL-FIRED FURNACES OF ALL KINDS
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