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1.发明授权
公开(公告)号：US2930794A
公开(公告)日：1960-03-29
申请号：US75453458
申请日：1958-08-12
Applicant: BAYER AG
Inventor： FRIEDRICH LOBER , HELMUT FREYTAG , ERNST KRACHT
IPC: C08K5/00
CPC classification number: C08K5/0025 , C08L21/00
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