79049999
Dec 21, 2007
Oct 6, 2009
non-metallic shear connectors; non-metallic expansion joints for floors and walls, paving joints and joints for concrete; concrete slabs containing articulating joints; permanent formwork, not of metal, namely, edge form for concrete paving, footpaths and roads; joint systems, not of metal, comprised of one or more of the foregoing
Nonmetallic Building Materials