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公开(公告)号：US2948715A
公开(公告)日：1960-08-09
申请号：US75588858
申请日：1958-08-19
Applicant: HOECHST AG
Inventor： ARTHUR SIEBERT , KURT RENNER
IPC: C09B29/20
CPC classification number: C09B29/20 , Y10S534/04
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