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发明名称
Apparat for nedhulls kjernepr°vetaking og testing
摘要
申请公布号
NO983942(A)
申请公布日期
1998.10.27
申请号
NO19980003942
申请日期
1998.08.27
申请人
BAKER HUGHES INC
发明人
HAY, ARTHUR D.;JOHNSON, MIKE H.;KRUEGER, VOLKER
分类号
E21B7/06;E21B10/04;E21B17/02;E21B17/10;E21B25/00;E21B25/10;E21B47/01;E21B49/02;(IPC1-7):E21B49/02
主分类号
E21B7/06
代理机构
代理人
主权项
地址
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