73445141
Sep 23, 1983
Apr 9, 1985
Technical Ceramics-Namely, Alumina, Beryllia, Ferrites, Titanates, Boron Carbide, Silicon Carbide, Silicon Nitride, Fused Quartz and Other Nitrides, Borides, Carbides and Oxides for Such Uses as Hot Pressing Dies, Microwave Absorbing Ceramics, Nuclear Ceramics, Ceramic Tooling, Metallurigical Refractories, Gas Bearings, Armor and Ceramic Turbine Components and the Like
Chemicals