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公开(公告)号：US2895637A
公开(公告)日：1959-07-21
申请号：US58367956
申请日：1956-05-09
Applicant: GEN ELECTRIC
Inventor： BAKKE HANS A , TREITEL HENRY D
IPC: G01D11/24
CPC classification number: G01D11/24
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