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公开(公告)号：US2760184A
公开(公告)日：1956-08-21
申请号：US30572652
申请日：1952-08-22
Applicant: TIDEWATER OIL COMPANY
Inventor： ROBERT BEATTLE
IPC: G01N29/04
CPC classification number: G01N29/046 , G01N2291/02408
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