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公开(公告)号：US3019272A
公开(公告)日：1962-01-30
申请号：US67595257
申请日：1957-08-02
Applicant: BASF AG
Inventor： ADOLF STEINHOFER , ERNST BARTHOLOME , OTTO FREY , HELMUT NONNEMACHER
IPC: C07C11/02
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