75042323
Jan 11, 1996
Sep 1, 1998
metal building materials for constructing and finishing ceilings, namely, ceiling panels, joists, and a T-bar grid system consisting primarily of factory curved, stretch bent, main runners and connecting cross runners with integral locking tabs for retaining said panels
Metal Goodsnon-metal building materials for constructing and finishing ceilings, namely, ceiling panels, joists, and a T-bar grid system consisting primarily of factory curved, stretch bent, main runners and connecting cross runners with integral locking tabs for retaining said panels
Nonmetallic Building Materials