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公开(公告)号:US2412123A
公开(公告)日:1946-12-03
申请号:US48426643
申请日:1943-04-23
Applicant: HOWARD CARPENTER RUPERT EVAN
Inventor: HOWARD CARPENTER RUPERT EVAN
IPC: H01H51/22
CPC classification number: H01H51/2281
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公开(公告)号:US2396135A
公开(公告)日:1946-03-05
申请号:US48524443
申请日:1943-04-30
Applicant: GEORGE TERRY ROBERT SAINT , HOWARD CARPENTER RUPERT EVAN
IPC: H04R11/08
CPC classification number: H04R11/08
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13.Apparatus for analysis and measurement of noise and other sounds 失效
Title translation: 用于分析和测量噪声和其他声音的装置公开(公告)号:US1907415A
公开(公告)日:1933-05-02
申请号:US61933432
申请日:1932-06-25
Applicant: HOWARD CARPENTER RUPERT EVAN , RICHARD STANSFIELD
Inventor: HOWARD CARPENTER RUPERT EVAN , RICHARD STANSFIELD
IPC: G01H3/00
CPC classification number: G01H3/00
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公开(公告)号:US2891200A
公开(公告)日:1959-06-16
申请号:US52946755
申请日:1955-08-19
Applicant: HOWARD CARPENTER RUPERT EVAN
Inventor: HOWARD CARPENTER RUPERT EVAN
CPC classification number: H01H50/24 , G03C1/795 , H01H51/2263
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公开(公告)号:US2219222A
公开(公告)日:1940-10-22
申请号:US16278537
申请日:1937-09-07
Applicant: HOWARD CARPENTER RUPERT EVAN
Inventor: HOWARD CARPENTER RUPERT EVAN
IPC: H01H50/54
CPC classification number: H01H50/54
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公开(公告)号:US2031528A
公开(公告)日:1936-02-18
申请号:US73712034
申请日:1934-07-26
Applicant: PENDLETON ECKERSLEY PETER , HOWARD CARPENTER RUPERT EVAN
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公开(公告)号:US1826990A
公开(公告)日:1931-10-13
申请号:US35249429
申请日:1929-04-04
Applicant: HOWARD CARPENTER RUPERT EVAN
Inventor: HOWARD CARPENTER RUPERT EVAN
CPC classification number: H04R11/00 , H01H51/2236
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公开(公告)号:US1775886A
公开(公告)日:1930-09-16
申请号:US8258126
申请日:1926-01-20
Applicant: HOWARD CARPENTER RUPERT EVAN
Inventor: HOWARD CARPENTER RUPERT EVAN
IPC: H01J19/68
CPC classification number: H01J19/68
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