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公开(公告)号:US2951241A
公开(公告)日:1960-08-30
申请号:US70203757
申请日:1957-12-11
Applicant: IBM
Inventor: QUADE EDWARD A
CPC classification number: G11C21/026 , G11C11/20
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公开(公告)号:US2875429A
公开(公告)日:1959-02-24
申请号:US63664257
申请日:1957-01-28
Applicant: IBM
Inventor: QUADE EDWARD A
IPC: G11B5/33
CPC classification number: G11B5/33
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