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发明名称
Einrichtung zur Bohrlocherweiterung fuer die Vorrichtung von Rammstreben
摘要
申请公布号
DE1209078(B)
申请公布日期
1966.01.20
申请号
DE1963G037232
申请日期
1963.03.08
申请人
GEWERKSCHAFT EISENHUETTE WESTFALIA
发明人
HEYER WILLY;ERWIEN HELMUT;SCHIGULSKI DIPL.-ING. HANS
分类号
E21C25/54;E21C27/35
主分类号
E21C25/54
代理机构
代理人
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地址
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