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发明名称
Vorrichtung zum Verbinden von bohrgestaengen oder Rohren mit einem Drehantrieb
摘要
申请公布号
DE1500855(A1)
申请公布日期
1969.07.31
申请号
DE19661500855
申请日期
1966.12.15
申请人
MASCHINEN U. BOHRGERAETEFABRIK A. WIRTH & CO KG
发明人
WOLTERS,JAKOB
分类号
E21B19/16
主分类号
E21B19/16
代理机构
代理人
主权项
地址
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