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公开(公告)号：US2738030A
公开(公告)日：1956-03-13
申请号：US31167852
申请日：1952-09-26
Applicant: BASF AG
Inventor： RUDOLF KELLER , ERNST KEYSSNER , ALFRED MUENSTER , PETER PFAFF
IPC: B01D53/14
CPC classification number: B01D53/1493
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