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发明名称
Trykk-aktivert drivverktøy
摘要
申请公布号
NO20001230(D0)
申请公布日期
2000.03.09
申请号
NO20000001230
申请日期
2000.03.09
申请人
BAKER HUGHES INC
发明人
SAMPSON, TIMOTHY W.;HO, VAN N.;KAISER, GARRY R.
分类号
E21B17/06;E21B23/04;(IPC1-7):E21B
主分类号
E21B17/06
代理机构
代理人
主权项
地址
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