发明名称 Wall block and wall block system for constructing walls
摘要 Wall blocks and methods of constructing walls from the wall blocks which have a side connection system interlocking adjacent blocks whereby a side of the block is provided with a channel or slot that is configured to engage a corresponding projection on the adjacent block. The side connection system may alternatively have a connection receiving cavity formed by channels or slots on the sides of the blocks which are configured to align with a channel or slot from adjacent blocks where a connector may be received to interlock the blocks.
申请公布号 US7971407(B2) 申请公布日期 2011.07.05
申请号 US20080124311 申请日期 2008.05.21
申请人 KEYSTONE RETAINING WALL SYSTEMS, INC. 发明人 MACDONALD ROBERT A.
分类号 E04C3/22;E04C3/20 主分类号 E04C3/22
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