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公开(公告)号：US2970029A
公开(公告)日：1961-01-31
申请号：US77717858
申请日：1958-12-01
Applicant: HOECHST AG
Inventor： HERBERT KRACKER , HANS ALBERT , HANS THALER
IPC: C09B31/06
CPC classification number: C09B31/06 , Y10S534/01
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