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公开(公告)号：US2989535A
公开(公告)日：1961-06-20
申请号：US83194459
申请日：1959-08-06
Applicant: BASF AG
Inventor： HERMANN GEEREN , FRIEDRICH EBEL , WILLY BRAUN
IPC: C09B5/30
CPC classification number: C09B5/30
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