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公开(公告)号：CH617285A5
公开(公告)日：1980-05-14
申请号：CH800077
申请日：1977-06-29
Applicant: BASF AG
Inventor： GAISER DIETER , WOELLHAF JOSEF , SCHOETTLE KLAUS , LENNE HORST-UDO DR , GUENTHER FRIEDRICH , WENDET ERICH
IPC: G11B23/113 , G11B23/08 , G11B5/78
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