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公开(公告)号：US3492653A
公开(公告)日：1970-01-27
申请号：US3492653D
申请日：1967-09-08
Applicant: IBM
Inventor： FOSDICK THERON , HAMBURGEN ARTHUR , HENNIS ROBERT B
CPC classification number: G06K9/72 , G06K2209/01
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