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Pat. 10404196 United States, Int. Cl.22 H02P 6/28, F24F 7/007, F25B 31/02, H02M 1/34, H02M 3/158, H02P 27/06, H02M 1/00, H02M 1/42, H02M 7/00. Backflow preventing device, power conversion apparatus, and refrigerating and air-conditioning apparatus : Appl. N 14/902039 : Filed 02.07.2014 : Pub. 03.09.2019 : / Takuya Shimomugi, Koichi Arisawa, Takashi Yamakawa, Keisuke Uemura, Noriyuki Matsubara, Shinsaku Kusube, Kenta Yuasa, Akihiro Tsumura ; Assignee Mitsubishi Electric Corp ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US10404196/en?oq=US10404196.html (дата обращения: ДД.ММ.ГГГГ).