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发明名称
Bohrvorrichtung
摘要
申请公布号
DE19831009(C2)
申请公布日期
2000.05.18
申请号
DE19981031009
申请日期
1998.07.10
申请人
BTD BOHRTECHNIK GMBH
发明人
分类号
E21B4/20;E21B6/00;E21B7/20;E21B17/18;E21B21/02;E21B21/12;(IPC1-7):E21B1/02;E21B7/18
主分类号
E21B4/20
代理机构
代理人
主权项
地址
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