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公开(公告)号：US2809217A
公开(公告)日：1957-10-08
申请号：US41158454
申请日：1954-02-19
Applicant: HOFFMANN LA ROCHE
Inventor： HERLOFF INHOFFEN HANS , FERDINAND BOHLMANN
IPC: C07F1/02
CPC classification number: C07F1/02
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