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公开(公告)号：US2600158A
公开(公告)日：1952-06-10
申请号：US77256147
申请日：1947-09-06
Applicant: STANDARD OIL DEV CO
Inventor： CLOTHIER ARCHIE T
IPC: G01N25/14
CPC classification number: G01N25/14 , Y10T436/21 , Y10T436/25 , Y10T436/25875
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