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公开(公告)号：US3426337A
公开(公告)日：1969-02-04
申请号：US3426337D
申请日：1964-12-21
Applicant: IBM
Inventor： BLACK ROBERT J , THALER GEORGE J , PRENTKY PETER I , CORDANO RICHARD D
CPC classification number: H03M1/00 , G11B21/106 , H03M1/22
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