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公开(公告)号：US3217183A
公开(公告)日：1965-11-09
申请号：US24952963
申请日：1963-01-04
Applicant: IBM
Inventor： THOMPSON LEONARD H , EILEEN BRUNSCHWEIGER MARY
CPC classification number: G11B20/1419 , H04L25/4904
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