78099769
Dec 21, 2001
Jun 8, 2004
Retaining wall system composed of concrete blocks, non-metallic connector bars, namely, lock bars suitable for retaining wall systems, earth reinforcement materials, namely, synthetic reinforcement fabric and grids, drainage tiles, and masonry adhesive suitable for use in retaining wall systems; concrete blocks; non-metallic connector bars, namely, lock bars suitable for retaining wall systems
Nonmetallic Building Materials