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公开(公告)号：US3040386A
公开(公告)日：1962-06-26
申请号：US68100357
申请日：1957-08-29
Applicant: BELL TELEPHONE LABOR INC
Inventor： LOCKWOOD WILLIAM H , HENRY PETERS
CPC classification number: G11B5/84 , B29D17/00 , G11B5/76 , Y10S425/033 , Y10T428/31
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