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公开(公告)号：US2644012A
公开(公告)日：1953-06-30
申请号：US11977749
申请日：1949-10-05
Applicant: UPJOHN CO
Inventor： JEROME KORMAN , REID JR WILLIAM B , NATHAN ALAN H , HOGG JOHN A
IPC: C07C49/517
CPC classification number: C07C49/517
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