U.S. federal trademark · Serial No. 79428713 · Reg. No. 8248730
Refractory building and construction materials, not of metal; refractory masses for construction purposes, not of metal; refractory ceramic masses for construction purposes; refractory ceramic mixtures being construction materials, not of metal; non-metal refractory furnace linings, for construction purposes; structural parts and fittings for all of the aforesaid goods
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