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公开(公告)号:CA936955A
公开(公告)日:1973-11-13
申请号:CA112291
申请日:1971-05-06
Applicant: IBM
Inventor: JONES A , VIGAR J , KINGTON B , PASCUAL R , CH OWEN , SMITH D
IPC: G11B5/133 , G11B5/17 , G11B5/31 , G11B5/60