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1.发明授权
公开(公告)号：US2938924A
公开(公告)日：1960-05-31
申请号：US59108756
申请日：1956-06-13
Applicant: BASF AG
Inventor： WALTER SIMON , JOACHIM WALDMANN HANS , ERNST PLAUTH
IPC: C07C51/31
CPC classification number: C07C51/313 , C07C55/02 , C07C55/24
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