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公开(公告)号:US3199091A
公开(公告)日:1965-08-03
申请号:US100260
申请日:1960-01-07
Applicant: IBM
Inventor: BARKHUFF EARL D , CHILDS HENRY E , SCHULTZ FREDERICK A , STREETER DONALD N
IPC: G11B15/04
CPC classification number: G11B15/04
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公开(公告)号:US3004729A
公开(公告)日:1961-10-17
申请号:US138760
申请日:1960-01-08
Applicant: IBM
Inventor: BARKHUFF EARL D
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