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公开(公告)号:DE2041977A1
公开(公告)日:1972-03-02
申请号:DE2041977
申请日:1970-08-25
Applicant: BASF AG
Inventor: SCHOETTLE KLAUS DIPL-ING , HACK JOACHIM DIPL-ING , LOEWENBERG GUSTAV DIPL-ING , HOFFMANN WERNER
IPC: G11B15/60 , G11B23/08