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公开(公告)号：US1632259A
公开(公告)日：1927-06-14
申请号：US72225
申请日：1925-01-05
Applicant: STANDARD OIL CO
Inventor： WILSON ROBERT E , BAHLKE WILLIAM H
IPC: G01N9/14
CPC classification number: G01N9/14
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