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Pat. 11201559 United States, Int. Cl.22 H02M 5/458, H02M 1/00. Power conversion device and power conversion device connection method : Appl. N 16/617875 : Filed 14.06.2017 : Pub. 14.12.2021 : / Kimihisa Furukawa, Yuuichi Mabuchi, Yuki Kawaguchi, Akihiko Kanouda ; Assignee Hitachi Ltd ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US11201559/en?oq=US11201559.html (дата обращения: ДД.ММ.ГГГГ).