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公开(公告)号：US3221076A
公开(公告)日：1965-11-30
申请号：US7730360
申请日：1960-12-21
Applicant: BASF AG
Inventor： OTTO FREY , GOTTFRIED RICHTER , KARL SCHUHMANN
CPC classification number: C10G9/32 , C10G2400/20
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