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发明名称
Omstillingsverktoy
摘要
申请公布号
NO311051(B1)
申请公布日期
2001.10.01
申请号
NO19960000208
申请日期
1996.01.17
申请人
BAKER HUGHES INC
发明人
CONSTANTINE JR., JESSE J.
分类号
E21B23/04;E21B34/14;(IPC1-7):E21B34/14
主分类号
E21B23/04
代理机构
代理人
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