U.S. federal trademark · Serial No. 71637606 · Reg. No. 0576477
HEAT-REFRACTORY MATERIALS CONSISTING OF CRYSTALLINE ALUMINA, SILICON CARBIDE, MAGNESIA GRAIN FOR INSULATION, LINING, PACKING, AND CEMENT MATERIALS; [REFRACTORY BRICKS, BLOCKS, PLATES, AND OTHER BONDED REFRACTORY SHAPED ARTICLES]
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