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Pat. 10608570 United States, Int. Cl.22 H02M 1/42, H02M 1/00, H02M 1/36, H02M 5/458, H02P 5/74, H02P 27/08, H02M 7/219. Power converter and refrigeration air conditioner : Appl. N 15/767200 : Filed 18.10.2017 : Pub. 31.03.2020 : / Yoji Ogura, Kazuhiro Ueta, Kenji Tamura, Wataru Hatsuse ; Assignee Hitachi Johnson Controls Air Conditioning Inc ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US10608570/en?oq=US10608570.html (дата обращения: ДД.ММ.ГГГГ).