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公开(公告)号:US2952008A
公开(公告)日:1960-09-06
申请号:US70524657
申请日:1957-12-26
Applicant: IBM
Inventor: MITCHELL GEORGE E , ALLEN CHARLES W
IPC: G06K7/016
CPC classification number: G06K7/0163
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公开(公告)号:US2823369A
公开(公告)日:1958-02-11
申请号:US44522154
申请日:1954-07-23
Applicant: IBM
Inventor: HAUG ROY L , ALLEN CHARLES W
IPC: G11C8/02 , G11C11/403 , G11C11/406 , G11C19/18
CPC classification number: G11C19/18 , G11C11/403 , G11C11/406
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