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公开(公告)号:US3549810A
公开(公告)日:1970-12-22
申请号:US3549810D
申请日:1968-04-22
Applicant: BELL TELEPHONE LABOR INC
Inventor: DRISCOLL JOHN J , HILL DONALD G , WADDELL RICHARD E
CPC classification number: H04M11/045
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公开(公告)号:US3509286A
公开(公告)日:1970-04-28
申请号:US3509286D
申请日:1966-04-01
Applicant: BELL TELEPHONE LABOR INC
Inventor: DRISCOLL JOHN J
CPC classification number: H04M1/272
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