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公开(公告)号:US3217304A
公开(公告)日:1965-11-09
申请号:US12065261
申请日:1961-06-29
Applicant: IBM
Inventor: BAXTER DUANE W , ANIS DAVID W
CPC classification number: G11B5/012
公开(公告)号:US3217304A
公开(公告)日:1965-11-09
申请号:US12065261
申请日:1961-06-29
Applicant: IBM
Inventor: BAXTER DUANE W , ANIS DAVID W
CPC classification number: G11B5/012