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公开(公告)号：US2502619A
公开(公告)日：1950-04-04
申请号：US78175047
申请日：1947-10-23
Applicant: STANDARD OIL CO
Inventor： PROCLL WAYNE A , HILL BERNARD L
IPC: C07C309/04
CPC classification number: C07C303/42 , C07C309/04
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