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Pat. 10910861 United States, Int. Cl.22 H02J 7/02, H02J 7/00, H02J 7/04, H02M 1/00, H02M 1/08, H02M 1/32, H02M 3/335, H02M 3/337. Charging system, charging method, and power adapter : Appl. N 16/308008 : Filed 06.04.2017 : Pub. 02.02.2021 : / Chen Tian, Jialiang Zhang ; Assignee Guangdong Oppo Mobile Telecommunications Corp Ltd ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US10910861/en?oq=US10910861.html (дата обращения: ДД.ММ.ГГГГ).