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公开(公告)号:US3179404A
公开(公告)日:1965-04-20
申请号:US30260863
申请日:1963-08-16
Applicant: IBM
Inventor: FELTS WILLIAM C , MANNING STANLEY A
IPC: G06K13/077
CPC classification number: G06K13/077
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公开(公告)号:CA726050A
公开(公告)日:1966-01-18
申请号:CA726050D
Applicant: IBM
Inventor: FELTS WILLIAM C , MANNING STANLEY A
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