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公开(公告)号：US3217545A
公开(公告)日：1965-11-16
申请号：US24254362
申请日：1962-12-05
Applicant: GEOPHYSICS CORP OF AMERICA
Inventor： SAMUEL KREISMAN WALLACE
IPC: G01L21/04
CPC classification number: G01L21/04
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