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公开(公告)号：US2906588A
公开(公告)日：1959-09-29
申请号：US61770656
申请日：1956-10-23
Applicant: BASF AG
Inventor： WILHELM BRUNKHORST , EMIL KERN , HANS BAUMANN
IPC: C09B23/10
CPC classification number: C09B23/105 , Y10S8/927
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