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发明名称
Drainage grids
摘要
申请公布号
GB2252583(A)
申请公布日期
1992.08.12
申请号
GB19910002607
申请日期
1991.02.07
申请人
* E.C.C. CONSTRUCTION MATERIALS LIMITED
发明人
PETER * BARTON
分类号
E03F5/06;E04C2/42
主分类号
E03F5/06
代理机构
代理人
主权项
地址
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