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公开(公告)号：US3481988A
公开(公告)日：1969-12-02
申请号：US3481988D
申请日：1967-08-04
Applicant: BASF AG
Inventor： WUNSCH GERD , WINTERSBERGER KARL , GEIERHAAS HERBERT
CPC classification number: C07F9/509
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