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公开(公告)号：US3157631A
公开(公告)日：1964-11-17
申请号：US29245763
申请日：1963-07-02
Applicant: BASF AG
Inventor： HANS WEIDINGER , GOTTFRIED HAESE HANS
IPC: C09B43/36
CPC classification number: C09B43/36
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