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公开(公告)号：US2601782A
公开(公告)日：1952-07-01
申请号：US13310949
申请日：1949-12-15
Applicant: STANDARD OIL CO
Inventor： FOREMAN ROBERT W , GUTH FRED H
IPC: G01N19/04
CPC classification number: G01N19/04
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