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发明名称
Einen Hohlraum ausarbeitende Gewinnungsmaschine mit einem durch Pressluftschlagwerkzeug in diesem Hohlraum vorgetriebenen Abtreibkeil
摘要
申请公布号
DE753008(C)
申请公布日期
1951.08.16
申请号
DE1939G104751D
申请日期
1939.01.28
申请人
GEWERKSCHAFT EISENHUETTE WESTFALIA
发明人
LOEBBE WILHELM
分类号
E21C27/18
主分类号
E21C27/18
代理机构
代理人
主权项
地址
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