74369878
Mar 19, 1993
Sep 27, 1994
chemicals for industrial applications; namely, metal oxides and blends of metal oxides for use in enamels and as components of ceramic pastes and of refractory materials
Chemicalsgranular and shaped refractory materials and building materials based on metal oxides, [ finishes ] * FINISHED * refractory brick and block
Nonmetallic Building Materials