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Pat. 10160334 United States, Int. Cl.22 H02M 3/156, B60L 11/18, H02M 1/44, H02M 7/44, H02P 27/08. Power conversion device and machine equipped with power conversion device : Appl. N 15/121310 : Filed 08.12.2014 : Pub. 25.12.2018 : / Isao Houda, Masayoshi Takahashi, Hiroki Funato, Hitoshi Akiyama ; Assignee Hitachi Ltd ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US10160334/en?oq=US10160334.html (дата обращения: ДД.ММ.ГГГГ).