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公开(公告)号：US3218357A
公开(公告)日：1965-11-16
申请号：US14246361
申请日：1961-06-29
Applicant: RUHRCHEMIC AG
Inventor： OTTO ROELEN , WALTER ROTTIG
CPC classification number: C07C45/82 , C07C45/783 , C07C45/81
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