U.S. federal trademark · Serial No. 77755330 · Reg. No. 3875446
Chemicals, namely, ready to use refractory blends of fused silica for ceramic shell investment casting, and other refractory applications, not for use as a building material; Chemicals, namely, ready to use refractory blends of alumino-silicate for ceramic shell investment casting, and other refractory applications, not for use as a building material; Chemicals, namely, ready to use refractory blends of fused silica and alumino-silicate for ceramic shell investment casting, and other refractory applications, not for use as a building material
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