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公开(公告)号:US2927730A
公开(公告)日:1960-03-08
申请号:US61942156
申请日:1956-10-31
Applicant: BELL TELEPHONE LABOR INC
Inventor: MIDDAUGH JACK K , YOUNG JR WILLIAM R
IPC: G06F3/06
CPC classification number: G06F3/0601 , G06F2003/0698
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公开(公告)号:US3018334A
公开(公告)日:1962-01-23
申请号:US61942456
申请日:1956-10-31
Applicant: BELL TELEPHONE LABOR INC
Inventor: MIDDAUGH JACK K
IPC: H04M3/36
CPC classification number: H04M3/36
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公开(公告)号:US2981806A
公开(公告)日:1961-04-25
申请号:US73017958
申请日:1958-04-22
Applicant: BELL TELEPHONE LABOR INC
Inventor: MIDDAUGH JACK K
IPC: H04M3/36
CPC classification number: H04M3/36
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