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发明名称
Fussstuetze fuer eisernen Grubenausbau
摘要
申请公布号
DE525376(C)
申请公布日期
1931.05.22
申请号
DENDATT036879D
申请日期
申请人
ALFRED THIEMANN
发明人
分类号
E21D15/54
主分类号
E21D15/54
代理机构
代理人
主权项
地址
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