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公开(公告)号：US3238239A
公开(公告)日：1966-03-01
申请号：US18267562
申请日：1962-03-26
Applicant: BASF AG
Inventor： WALTER SCHWECKENDIEK , WALTER SCHLIESSER
IPC: C07C69/54
CPC classification number: C07C327/00
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