U.S. federal trademark · Serial No. 79233928 · Reg. No. 5736262
Non-metal building materials, namely, fireproof and heat resistant stones; fireproof building materials, namely, stones as building materials for lining industrial fireplaces; stones; artificial stones; fireproof stones; masses for manufacturing fireproof linings namely, refractory construction materials not of metal; fireproof cements; non-metal minerals for building or construction, namely, for manufacturing refractory linings
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