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发明名称
Bogenfoermiger Verzug im Grubenausbau
摘要
申请公布号
DE586873(C)
申请公布日期
1933.10.27
申请号
DENDATH132510D
申请日期
申请人
HUGO HERZBRUCH
发明人
分类号
E21D11/15
主分类号
E21D11/15
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代理人
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