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公开(公告)号：US3257160A
公开(公告)日：1966-06-21
申请号：US43483965
申请日：1965-02-24
Applicant: BAYER AG
Inventor： MAX ZIMMERMANN , HERBERT KALLFASS
IPC: C23F11/08
CPC classification number: C23F11/08 , Y10S204/90
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