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公开(公告)号:US1933097A
公开(公告)日:1933-10-31
申请号:US62270132
申请日:1932-07-15
Applicant: WALTER DALLENBACH
Inventor: WALTER DALLENBACH
IPC: H01J7/42
CPC classification number: H01J7/42
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公开(公告)号:US1866624A
公开(公告)日:1932-07-12
申请号:US17050527
申请日:1927-02-24
Applicant: WALTER DALLENBACH
Inventor: WALTER DALLENBACH
CPC classification number: H01J17/04 , H01B17/30 , H01J2893/0034
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公开(公告)号:US2382693A
公开(公告)日:1945-08-14
申请号:US38036841
申请日:1941-02-24
Applicant: WALTER DALLENBACH , ALFRED ALLERDING , ERICH HUTTMANN
Inventor: WALTER DALLENBACH , ALFRED ALLERDING , ERICH HUTTMANN
IPC: H04B1/26
CPC classification number: H04B1/26
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公开(公告)号:US2349942A
公开(公告)日:1944-05-30
申请号:US35375540
申请日:1940-08-22
Applicant: WALTER DALLENBACH
Inventor: WALTER DALLENBACH
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25.Arrangement for the background noiseless production of sound films 失效
Title translation: 背景无声制作声音片的安排公开(公告)号:US2297392A
公开(公告)日:1942-09-29
申请号:US30911139
申请日:1939-12-13
Applicant: WALTER DALLENBACH
Inventor: WALTER DALLENBACH
IPC: G11B7/00
CPC classification number: G11B7/00
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公开(公告)号:US2135883A
公开(公告)日:1938-11-08
申请号:US5705835
申请日:1935-12-31
Applicant: WALTER DALLENBACH
Inventor: WALTER DALLENBACH
CPC classification number: H01J13/28 , H01J13/50 , H01J2893/0088
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公开(公告)号:US2065269A
公开(公告)日:1936-12-22
申请号:US4621935
申请日:1935-10-22
Applicant: WALTER DALLENBACH
Inventor: WALTER DALLENBACH
CPC classification number: H01J13/32 , H01J13/50 , H01J2893/0088
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公开(公告)号:US1957993A
公开(公告)日:1934-05-08
申请号:US46027430
申请日:1930-06-10
Applicant: WALTER DALLENBACH
Inventor: WALTER DALLENBACH
IPC: H01J13/32
CPC classification number: H01J13/32
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29.
公开(公告)号:US1901802A
公开(公告)日:1933-03-14
申请号:US34796529
申请日:1929-03-18
Applicant: WALTER DALLENBACH
Inventor: WALTER DALLENBACH
CPC classification number: H01J17/04 , H01J5/42 , H01J2893/0034
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