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1.Coating for equalizing the potential gradient along the surface of an electric insulation 失效
Title translation: 用于均衡沿电绝缘表面的电位梯度的涂层公开(公告)号:US3066180A
公开(公告)日:1962-11-27
申请号:US82356159
申请日:1959-06-29
Applicant: ASEA AB
Inventor: LARS-GORAN VIRSBERG , ANDREAS KELEN
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2.
公开(公告)号:US3412200A
公开(公告)日:1968-11-19
申请号:US60027366
申请日:1966-12-08
Applicant: ASEA AB
Inventor: LARS-GORAN VIRSBERG , LARS-GORAN LAURELL
IPC: H01B9/02
CPC classification number: H01B9/027
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3.Frequency changer with a plurality of transformers and a synchronously rotating means 失效
Title translation: 变频器具有多个变压器和同步旋转装置公开(公告)号:US3359482A
公开(公告)日:1967-12-19
申请号:US45774865
申请日:1965-05-21
Applicant: ASEA AB
Inventor: JARLE SLETBAK , GUNNAR NILLSON , LARS-GORAN VIRSBERG
CPC classification number: G01R31/34 , H02M5/00 , H02M5/32 , Y10T307/852
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