U.S. federal trademark · Serial No. 79145685 · Reg. No. 4697688
[ Technical ceramic compositions for the manufacture of refractory materials ]
Refractory materials, namely, non-metallic building materials; refractory bricks, plates, blocks, and shaped parts made of non-metallic refractory materials used in the construction of ovens and furnaces; refractory blocks, not of metal for ovens and furnaces
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