U.S. federal trademark · Serial No. 79165373 · Reg. No. 4929688
Insulating refractory materials
Refractory construction materials, not of metal; refractory blocks not of metal; refractory bricks not of metal; bricks; furnace linings of non metallic materials; fused cast refractory blocks, not of metal; refractory blocks of corundum; refractory blocks of corundum-mullite; refractory blocks of corundum-zirconium oxide
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