U.S. federal trademark · Serial No. 79169229 · Reg. No. 4975427
Technical ceramic compositions in powdered form, granular form and block form for use in the manufacture of refractory materials
Refractory construction materials, not of metal; refractory construction materials not of metal, namely, refractory bricks, plates, blocks, shaped parts made of refractory materials used in the construction of ovens and furnaces; refractory concrete; refractory blocks not of metal for ovens and furnaces
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