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发明名称
Etançon pour galeries de mine
摘要
申请公布号
BE603612(A1)
申请公布日期
1961.09.01
申请号
BE19610603612
申请日期
1961.05.10
申请人
MASCHINENFABRIK EWALD WIEMANN
发明人
分类号
E21D15/28;(IPC1-7):E21D
主分类号
E21D15/28
代理机构
代理人
主权项
地址
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