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1.Means for square summation of the instantaneous values of two electric quantities 失效
Title translation: 用于两个电量的瞬时值的平方和的均值公开(公告)号:US2707765A
公开(公告)日:1955-05-03
申请号:US34516253
申请日:1953-03-27
Applicant: ASEA AB
Inventor: UNO LAMM , ERICH UHLMANN
CPC classification number: H02M7/06 , G06G7/20 , Y10T307/707
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公开(公告)号:US2820189A
公开(公告)日:1958-01-14
申请号:US60402756
申请日:1956-08-14
Applicant: ASEA AB
Inventor: ERICH UHLMANN
IPC: H02M7/00
CPC classification number: H02M7/006
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3.
公开(公告)号:US2730667A
公开(公告)日:1956-01-10
申请号:US28390652
申请日:1952-04-23
Applicant: ASEA AB
Inventor: ERICH UHLMANN
IPC: H02H7/26
CPC classification number: H02H7/268
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公开(公告)号:US3405344A
公开(公告)日:1968-10-08
申请号:US58671966
申请日:1966-10-14
Applicant: ASEA AB
Inventor: INGVAR BOKSJO CARL , ERICH UHLMANN
IPC: H02M1/088
CPC classification number: H02M1/088
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公开(公告)号:US2632878A
公开(公告)日:1953-03-24
申请号:US76988847
申请日:1947-08-21
Applicant: ASEA AB
Inventor: ERICH UHLMANN
IPC: H02M7/06
CPC classification number: H02M7/068
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6.Regulation of the alternating voltages in a direct current power transmission 失效
Title translation: 直流输电中交流电压的调节公开(公告)号:US3339083A
公开(公告)日:1967-08-29
申请号:US57593866
申请日:1966-08-26
Applicant: ASEA AB
Inventor: ERICH UHLMANN
IPC: H02J3/36
CPC classification number: H02J3/36 , Y02E60/60 , Y10T307/713
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7.
公开(公告)号:US2550624A
公开(公告)日:1951-04-24
申请号:US1510848
申请日:1948-03-16
Applicant: ASEA AB
Inventor: ERICH UHLMANN , JOHANNES HANSEN
CPC classification number: G05B11/013 , B23K11/248 , H03K17/54
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公开(公告)号:US3280334A
公开(公告)日:1966-10-18
申请号:US53459766
申请日:1966-02-03
Applicant: ASEA AB
Inventor: ERICH UHLMANN , IWAN HEDLUND
CPC classification number: H02J3/36 , H02M5/20 , H02M5/447 , Y02E60/60 , Y10T307/713 , Y10T307/724 , Y10T307/729
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9.Protective arrangement for high voltage direct current power transmission 失效
Title translation: 高压直流输电保护装置公开(公告)号:US3036257A
公开(公告)日:1962-05-22
申请号:US74567058
申请日:1958-06-30
Applicant: ASEA AB
Inventor: ERICH UHLMANN
CPC classification number: H02H7/268 , H02H7/1257
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公开(公告)号:US2774012A
公开(公告)日:1956-12-11
申请号:US35807453
申请日:1953-05-28
Applicant: ASEA AB
Inventor: UNO LAMM , ERICH UHLMANN
IPC: H02M7/15
CPC classification number: H02M7/151
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