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公开(公告)号：US3321563A
公开(公告)日：1967-05-23
申请号：US31528363
申请日：1963-10-10
Applicant: BASF AG
Inventor： AUGUST RETTIG , KURT SCHMIDTS , THEODOR DAUR
IPC: B29C47/88
CPC classification number: B29C47/8835 , B29C47/0026
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