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发明名称
Apparatus and method for drilling and reaming a borehole
摘要
申请公布号
GB0512920(D0)
申请公布日期
2005.08.03
申请号
GB20050012920
申请日期
2003.11.20
申请人
HALLIBURTON ENERGY SERVICES, INC.
发明人
分类号
E21B7/08;E21B10/32;E21B17/10
主分类号
E21B7/08
代理机构
代理人
主权项
地址
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SWITCH STRUCTURE
