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发明名称
DRAIN CONSTRUCTIONS
摘要
申请公布号
GB2161190(B)
申请公布日期
1987.11.25
申请号
GB19840016858
申请日期
1984.07.03
申请人
* SELFLEVEL COVERS AKTIENGESELLSCHAFT
发明人
DEREK * FERNS
分类号
E01C11/22;(IPC1-7):E01C11/22;E03F1/00
主分类号
E01C11/22
代理机构
代理人
主权项
地址
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