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发明名称
Reparasjonsanordning for brönnrör
摘要
申请公布号
NO972089(A)
申请公布日期
1997.11.10
申请号
NO19970002089
申请日期
1997.05.06
申请人
BAKER HUGHES INC
发明人
FLANDERS, BRUCE A.;LYNDE, GERALD D.;MACRAE, JONATHAN
分类号
E21B17/08;E21B29/10;E21B33/10;(IPC1-7):E21B29/10
主分类号
E21B17/08
代理机构
代理人
主权项
地址
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