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Pat. 10439420 United States, Int. Cl.22 H02J 7/00, H02M 7/04. Charging method, charging adapter and charging system : Appl. N 16/152350 : Filed 04.10.2018 : Pub. 08.10.2019 : / Jialiang Zhang, Wenqiang Cheng, Fuchun Liao, Liangcai Peng, Kewei Wu ; Assignee Guangdong Oppo Mobile Telecommunications Corp Ltd ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US10439420/en?oq=US10439420.html (дата обращения: ДД.ММ.ГГГГ).