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公开(公告)号：US3336573A
公开(公告)日：1967-08-15
申请号：US57943566
申请日：1966-09-14
Applicant: TEXACO INC
Inventor： GALLAWAY ROY L , PARRACK ALVIN L
IPC: G01V1/18
CPC classification number: G01V1/186
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