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公开(公告)号:US2576249A
公开(公告)日:1951-11-27
申请号:US77098047
申请日:1947-08-28
Applicant: BELL TELEPHONE LABOR INC
Inventor: BARNEY HAROLD L
IPC: G01R23/00
CPC classification number: G01R23/00
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公开(公告)号:US2572586A
公开(公告)日:1951-10-23
申请号:US15050550
申请日:1950-03-18
Applicant: BELL TELEPHONE LABOR INC
Inventor: BARNEY HAROLD L
IPC: H01J31/60
CPC classification number: H01J31/60
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公开(公告)号:US2550518A
公开(公告)日:1951-04-24
申请号:US12743949
申请日:1949-11-15
Applicant: BELL TELEPHONE LABOR INC
Inventor: BARNEY HAROLD L
CPC classification number: H03F3/04 , H01L29/00 , H03B5/1203 , H03B5/1221 , H03B5/1231 , H03F1/34 , H03F1/56
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公开(公告)号:US2238028A
公开(公告)日:1941-04-15
申请号:US28336839
申请日:1939-07-08
Applicant: BELL TELEPHONE LABOR INC
Inventor: BARNEY HAROLD L , BERGER URIAH S , MELHOSE ALFRED E
IPC: H04B7/005
CPC classification number: H04B7/005
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公开(公告)号:US2020452A
公开(公告)日:1935-11-12
申请号:US73617434
申请日:1934-07-20
Applicant: BELL TELEPHONE LABOR INC
Inventor: BARNEY HAROLD L
IPC: H04B3/20
CPC classification number: H04B3/20
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