74412474
Jul 13, 1993
Oct 22, 1996
non-metallic materials for use in construction, namely, cladding for buildings, walls and ceilings; rigid or semi-rigid sheets in the nature of panels, panels, and joint sections of polyvinyl chloride and polypropylene for use in joining adjacent sheets or panels, all for construction or cladding of walls and ceilings
Nonmetallic Building Materials