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公开(公告)号：US3484318A
公开(公告)日：1969-12-16
申请号：US3484318D
申请日：1966-06-23
Applicant: IBM
Inventor： NEUFELD FREDERICK R , PRATER MERLE P
CPC classification number: G11B5/702 , G06K1/125 , Y10S428/90 , Y10S428/914 , Y10T156/1041 , Y10T428/24612 , Y10T428/249986
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