85432907
Sep 27, 2011
Aug 28, 2012
Interlocking reinforced concrete components, namely, reinforced, engineered, and dry mixed concrete blocks formed as either a header piece 5' x 8" x 4" weighing 135 lbs, a front stretcher 5' by 6" by 4" weighing 125 pounds, a back stretcher 3' 9" by 6" by 4" weighing 95 pounds, or a false header 9.5" by 8" by 4" weighing 30 pounds for building bulk gravity crib retaining walls in the nature of an open faced concrete bulk gravity retaining wall in an open grid pattern that permits planting in the exposed earth face between the concrete sides
Nonmetallic Building Materials