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公开(公告)号:US2345386A
公开(公告)日:1944-03-28
申请号:US47944143
申请日:1943-03-17
Applicant: BELL TELEPHONE LABOR INC
Inventor: DUBUAR ARTHUR S
IPC: H01H67/16
CPC classification number: H01H67/16
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公开(公告)号:US2136612A
公开(公告)日:1938-11-15
申请号:US10029836
申请日:1936-09-11
Applicant: BELL TELEPHONE LABOR INC
Inventor: DUBUAR ARTHUR S
IPC: H01H50/56
CPC classification number: H01H50/56
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公开(公告)号:US2959642A
公开(公告)日:1960-11-08
申请号:US73742058
申请日:1958-05-23
Applicant: BELL TELEPHONE LABOR INC
Inventor: DUBUAR ARTHUR S
IPC: H04M3/12
CPC classification number: H04M3/12
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4.Pulse repeating with automatic compensation for high and low resistance loops 失效
Title translation: 脉冲重复,自动补偿高低电阻环路公开(公告)号:US2846509A
公开(公告)日:1958-08-05
申请号:US62839356
申请日:1956-12-14
Applicant: BELL TELEPHONE LABOR INC
Inventor: DUBUAR ARTHUR S
IPC: H04Q1/36
CPC classification number: H04Q1/36
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公开(公告)号:US2719881A
公开(公告)日:1955-10-04
申请号:US33066653
申请日:1953-01-12
Applicant: BELL TELEPHONE LABOR INC
Inventor: DUBUAR ARTHUR S , GEORGE RIDDELL
IPC: H04Q3/00
CPC classification number: H04Q3/00
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6.
公开(公告)号:US2496622A
公开(公告)日:1950-02-07
申请号:US64928946
申请日:1946-02-21
Applicant: BELL TELEPHONE LABOR INC
Inventor: DUBUAR ARTHUR S
IPC: H04Q1/20
CPC classification number: H04Q1/20
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7.Automatic line voltage compensator and impulse repeater for signaling systems 失效
Title translation: 信号系统的自动线路电压补偿器和脉冲中继器公开(公告)号:US2461200A
公开(公告)日:1949-02-08
申请号:US58164045
申请日:1945-03-08
Applicant: BELL TELEPHONE LABOR INC
Inventor: DUBUAR ARTHUR S
IPC: H04Q1/36
CPC classification number: H04Q1/36
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公开(公告)号:US2457878A
公开(公告)日:1949-01-04
申请号:US56627644
申请日:1944-12-02
Applicant: BELL TELEPHONE LABOR INC
Inventor: DUBUAR ARTHUR S
IPC: H01H67/16
CPC classification number: H01H67/16
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