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发明名称
ROUNDED CUTTER POCKET HAVING REDUCED STRESSED CONCENTRATION
摘要
申请公布号
EP2173962(A2)
申请公布日期
2010.04.14
申请号
EP20080772009
申请日期
2008.06.26
申请人
BAKER HUGHES INCORPORATED
发明人
BIRD, MARC, W.;OXFORD, ANDY
分类号
E21B10/573;E21B10/55
主分类号
E21B10/573
代理机构
代理人
主权项
地址
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