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公开(公告)号：BR8201897A
公开(公告)日：1983-03-08
申请号：BR8201897
申请日：1982-04-01
Applicant: HOECHST AG
Inventor： STEPHAN HANS WERNER , KLEIN HERMAN , LEHR KLAUS
IPC: B01J4/00 , B02C23/02 , C01B25/02 , C01B25/023
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