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发明名称
Verbindungseisen fuer ueberlappende Ausbauteile im Bergbau
摘要
申请公布号
DE621708(C)
申请公布日期
1935.11.12
申请号
DE1933P067819D
申请日期
1933.06.30
申请人
PETER PETERS
发明人
分类号
E21D11/18
主分类号
E21D11/18
代理机构
代理人
主权项
地址
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