发明申请
- 专利标题： RETAINING WALL BLOCK
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申请号： US12252837申请日： 2008-10-16
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公开(公告)号： US20090103987A1公开(公告)日： 2009-04-23
- 发明人: Robert A. MacDonald
- 申请人： Robert A. MacDonald
- 申请人地址： US MN Bloomington
- 专利权人： KEYSTONE RETAINING WALL SYSTEMS, INC.
- 当前专利权人： KEYSTONE RETAINING WALL SYSTEMS, INC.
- 当前专利权人地址： US MN Bloomington
- 主分类号： E02D29/02
- IPC分类号： E02D29/02 ; E04C1/00 ; B28B3/00
摘要：
A retaining wall block having a rear flange and a mold box and method of making the block. The mold box is configured with a mold cavity that includes a vertical flange forming cavity extending from the top of the mold box to the bottom of the mold box.
公开/授权文献
- US2255883A Register drive for dispensing pumps 公开/授权日：1941-09-16
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