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1.发明授权
公开(公告)号：US3420622A
公开(公告)日：1969-01-07
申请号：US3420622D
申请日：1966-02-17
Applicant: HOECHST AG
Inventor： DONGES ERNST , KOHLHAAS RUDOLF , HLOCH ALBERT , MEDIC NIKOLAI
CPC classification number: C01B33/103 , C05B11/06 , C05B11/12
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