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公开(公告)号：US3072526A
公开(公告)日：1963-01-08
申请号：US776060
申请日：1960-02-10
Applicant: HOFFMANN LA ROCHE
Inventor： ADOLF BUTENANDT , WALDEMAR GUEX , ERICH HECKER , RUDOLF RUEGG , ULRICH SCHWIETER
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