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公开(公告)号：US2907755A
公开(公告)日：1959-10-06
申请号：US69449057
申请日：1957-11-05
Applicant: BASF AG
Inventor： HANS LAUTENSCHLAGER , HERBERT FRIEDERICH , WOLFGANG SCHMIDT , KARL DACHS
IPC: C08G69/20
CPC classification number: C08G69/20
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