73454942
Nov 30, 1983
Apr 9, 1985
Structural and Building Materials-Namely, Natural and Artificial Stones, Cement, Lime, Mortar, Plaster and Gravel; Earthenware and Cement Pipes; Asphalt, Pitch and Bitumen Used in Road Construction; Prefabricated Houses; Stone Monuments and Mantelpieces
Nonmetallic Building Materials