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发明名称
Anker-Grubenausbau
摘要
申请公布号
DE934346(C)
申请公布日期
1955.10.20
申请号
DE1952R009023
申请日期
1952.05.13
申请人
RECKER HEINZ DR.-ING.
发明人
RECKER HEINZ DR.-ING.
分类号
E21D21/00
主分类号
E21D21/00
代理机构
代理人
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