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发明名称
FremgangsmÕte og apparat for boring og komplettering av br°nner
摘要
申请公布号
NO991668(D0)
申请公布日期
1999.04.08
申请号
NO19990001668
申请日期
1999.04.08
申请人
BAKER HUGHES INC
发明人
JOHNSON, MICHAEL H.;HARRELL, JOHN W.;TURICK, DANIEL;WATKINS, LARRY A.
分类号
E21B;E21B7/06;E21B43/10;E21B47/10;E21B49/08;(IPC1-7):E21B
主分类号
E21B
代理机构
代理人
主权项
地址
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