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发明名称
Device by tool adapted to change the drilling direction while drilling
摘要
申请公布号
GB2368864(B)
申请公布日期
2003.08.27
申请号
GB20010030877
申请日期
2000.06.21
申请人
* BAKKE TECHNOLOGY AS
发明人
STIG * BAKKE
分类号
E21B7/06;E21B7/08;(IPC1-7):E21B7/08;E21B17/20
主分类号
E21B7/06
代理机构
代理人
主权项
地址
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