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公开(公告)号:US3136861A
公开(公告)日:1964-06-09
申请号:US23151162
申请日:1962-10-18
Applicant: BELL TELEPHONE LABOR INC
Inventor: MAYO JOHN S
IPC: H04J3/07
CPC classification number: H04J3/07
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公开(公告)号:US2977576A
公开(公告)日:1961-03-28
申请号:US62814656
申请日:1956-12-13
Applicant: BELL TELEPHONE LABOR INC
Inventor: MAYO JOHN S
IPC: G06F1/04
CPC classification number: G06F1/04
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