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发明名称
EARTH BORING TOOLS HAVING EXPANDABLE MEMBERS
摘要
申请公布号
EP2483506(A2)
申请公布日期
2012.08.08
申请号
EP20100821047
申请日期
2010.09.21
申请人
BAKER HUGHES INCORPORATED
发明人
RADFORD, STEVEN, R.;TRINH, KHOI, Q.;LI, LI;ANDERSON, MARK, E.
分类号
E21B10/32;E21B7/28
主分类号
E21B10/32
代理机构
代理人
主权项
地址
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