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公开(公告)号：DE2618279A1
公开(公告)日：1976-11-25
申请号：DE2618279
申请日：1976-04-27
Applicant: BASF AG
Inventor： BURDORF DONALD , BJORDAHL JAMES
IPC: G11B15/295 , G11B15/30 , G11B15/43
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