74485228
Feb 1, 1994
nets, grids, mats and sheets for use in various civil engineering applications; structures and articles for fencing and reinforcement of concrete and asphalt; composites for drainage, filtration, and separation, construction materials and building concrete blocks; nets, sheets, mats and grids for river and coastline protection; materials for containment, stabilization, and reinforcement of the ground
Nonmetallic Building Materials