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公开(公告)号：US3536855A
公开(公告)日：1970-10-27
申请号：US3536855D
申请日：1968-01-16
Applicant: IBM
Inventor： GARDNER CHARLES L JR , KLEIN WALTER F , YOUNT WILLIAM R
IPC: G11B5/86
CPC classification number: G11B5/865
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