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Pat. 9948144 United States, Int. Cl.22 H02J 7/02, H02J 50/00, H02J 50/05, H02J 50/12, H02M 7/537. Power transmission system and power transmission device used for power transmission system : Appl. N 14/481220 : Filed 09.09.2014 : Pub. 17.04.2018 : / Hironori Sakai, Takanori Tsuchiya ; Assignee Murata Manufacturing Co Ltd ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US9948144/en?oq=US9948144.html (дата обращения: ДД.ММ.ГГГГ).