75261953
Mar 24, 1997
Feb 22, 2000
construction materials made of metal, namely, manhole lids, rings, and reducers, namely, pipes that reduce pipe volume or diameter
Metal Goodsconstruction materials, namely, reinforced and non-reinforced concrete pipe and connections, elliptical pipe, box culverts, precast bridges, catch basins, drop inlets, precast pipe fittings, namely, wyes, tees, bends, reducers, namely, pipes that reduce pipe volume or diameter, nose-ons, and concrete manhole cones, bases, inverts, and lids
Nonmetallic Building Materials