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公开(公告)号:US2531600A
公开(公告)日:1950-11-28
申请号:US7461649
申请日:1949-02-04
Applicant: BELL TELEPHONE LABOR INC
Inventor: BARNEY HAROLD L , PETERSON LISS C , POTTER RALPH K , SEARS RAYMOND W
CPC classification number: H03H15/00 , H01J19/00 , H01J29/02 , H01J31/60 , H01J2893/0022
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公开(公告)号:US2486776A
公开(公告)日:1949-11-01
申请号:US2227648
申请日:1948-04-21
Applicant: BELL TELEPHONE LABOR INC
Inventor: BARNEY HAROLD L
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公开(公告)号:US2451465A
公开(公告)日:1948-10-19
申请号:US73134347
申请日:1947-02-27
Applicant: BELL TELEPHONE LABOR INC
Inventor: BARNEY HAROLD L
IPC: H03H15/00
CPC classification number: H03H15/00
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公开(公告)号:US2342238A
公开(公告)日:1944-02-22
申请号:US42509941
申请日:1941-12-31
Applicant: BELL TELEPHONE LABOR INC
Inventor: BARNEY HAROLD L
IPC: H03G11/02
CPC classification number: H03G11/02
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公开(公告)号:US2285794A
公开(公告)日:1942-06-09
申请号:US37060040
申请日:1940-12-18
Applicant: BELL TELEPHONE LABOR INC
Inventor: BARNEY HAROLD L
IPC: H04B3/06
CPC classification number: H04B3/06
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26.Control of transmission in two-way signal wave transmission systems 失效
Title translation: 双向信号传输系统传输控制公开(公告)号:US2251028A
公开(公告)日:1941-07-29
申请号:US35880640
申请日:1940-09-28
Applicant: BELL TELEPHONE LABOR INC
Inventor: BARNEY HAROLD L
IPC: H04B3/20
CPC classification number: H04B3/20
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公开(公告)号:US3193626A
公开(公告)日:1965-07-06
申请号:US57042944
申请日:1944-12-29
Applicant: BELL TELEPHONE LABOR INC
Inventor: BARNEY HAROLD L
IPC: G11B3/64
CPC classification number: G11B3/64
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28.Method of and apparatus for automatically measuring sound transmission characteristics of a room 失效
Title translation: 自动测量房间声音传播特性的方法和装置公开(公告)号:US3156316A
公开(公告)日:1964-11-10
申请号:US6659760
申请日:1960-11-01
Applicant: BELL TELEPHONE LABOR INC
Inventor: BARNEY HAROLD L , GARDNER MARK B
IPC: G01H7/00
CPC classification number: G01H7/00
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公开(公告)号:US2978672A
公开(公告)日:1961-04-04
申请号:US22287851
申请日:1951-04-25
Applicant: BELL TELEPHONE LABOR INC
Inventor: BARNEY HAROLD L
IPC: G01S1/72
CPC classification number: G01S1/72
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公开(公告)号:US2685066A
公开(公告)日:1954-07-27
申请号:US22059851
申请日:1951-04-12
Applicant: BELL TELEPHONE LABOR INC
Inventor: BARNEY HAROLD L
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