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发明名称
Vorrichtung zur Sicherung der Ausmuendung eines Strebs in eine Abbaustrecke von Untertagebetrieben
摘要
申请公布号
DE1204169(B)
申请公布日期
1965.11.04
申请号
DE1962V022305
申请日期
1962.04.06
申请人
ALOYS VANWERSCH
发明人
VANWERSCH ALOYS
分类号
E21D11/36
主分类号
E21D11/36
代理机构
代理人
主权项
地址
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