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发明名称
Eckverbindungsstueck fuer die winklig aufeinanderstossenden Ausbauteile im Grubenbetrieb
摘要
申请公布号
DE518304(C)
申请公布日期
1931.02.14
申请号
DE1929T037418D
申请日期
1929.08.17
申请人
ALFRED THIEMANN
发明人
分类号
E21D11/05
主分类号
E21D11/05
代理机构
代理人
主权项
地址
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