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公开(公告)号：US2886770A
公开(公告)日：1959-05-12
申请号：US44180254
申请日：1954-07-07
Applicant: STANDARD OIL CO
Inventor： JACKSON JR WARREN , ELVING PHILIP J
IPC: G01N27/48
CPC classification number: G01N27/48
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