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公开(公告)号：US3447135A
公开(公告)日：1969-05-27
申请号：US3447135D
申请日：1966-08-18
Applicant: IBM
Inventor： CALTA SALVATORE A , CARLSON HARRY A , GRANITO GERRY D , KAUMEYER LYNN W , MARCOTTE ALPHONSE U , MESSINA BENEDICTO U
CPC classification number: G06F13/122 , G06F13/18
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