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公开(公告)号：US2364058A
公开(公告)日：1944-12-05
申请号：US41482041
申请日：1941-10-13
Applicant: STANDARD OIL CO
Inventor： BURK ROBERT E , HARTIG MARTVAL J
IPC: G01N25/14
CPC classification number: G01N25/145 , Y10T137/3105 , Y10T137/85938
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