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1.发明授权Device for transforming a first alternating voltage of a certain frequency to a second voltage of another frequency 失效用于将特定频率的第一交流电压变换为另一频率的第二电压的装置
公开(公告)号：US3358213A
公开(公告)日：1967-12-12
申请号：US36862964
申请日：1964-05-19
Applicant: ASEA AB
Inventor： JARLE SLETBACK , GORAN VIRSBERG LARS , NILS HYLTEN-CAVALLIUS
IPC: H02M5/32
CPC classification number: H02M5/32 , Y10T307/852
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