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公开(公告)号：NO20045397A
公开(公告)日：2005-02-23
申请号：NO20045397
申请日：2004-12-10
Applicant: BAKER HUGHES INC
Inventor： DIFOGGIO ROCCO , WALKOW ARNOLD M , BERGREN PAUL A , PEREZ LOUIS
IPC: G01V8/02
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