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公开(公告)号：US2994697A
公开(公告)日：1961-08-01
申请号：US72855458
申请日：1958-04-15
Applicant: HOECHST AG
Inventor： WILHELM ECKERT , OTTO FUCHS , FRIEDRICH RAIZNER , HEINZ RENTEL
IPC: C09B57/12
CPC classification number: C09B57/12
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