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公开(公告)号：US3027081A
公开(公告)日：1962-03-27
申请号：US78449659
申请日：1959-01-02
Applicant: IBM
Inventor： EVANS OLIVER D , HARTMAN FRANK B
CPC classification number: G06F9/30018 , G06F9/30054 , G06F15/78
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