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Pat. 10476259 United States, Int. Cl.22 H02H 7/125, G01R 19/10, G01R 25/00, H02H 1/00, H02H 7/122, H02M 1/00, H02M 7/48. Power conversion device and method for determining operational state of breaking device : Appl. N 16/308106 : Filed 06.03.2017 : Pub. 12.11.2019 : / Toshiaki Okumura, Naoki Ayai, Koichi Takeshita, Fumio Urakawa, Shinjirou Shinada, Tadatsugu Udono ; Assignee Sumitomo Electric Industries Ltd ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US10476259/en?oq=US10476259.html (дата обращения: ДД.ММ.ГГГГ).