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Pat. 11502535 United States, Int. Cl.22 H02M 3/07, H02J 7/00. Charging circuit for electronic device, charging method, and electronic device : Appl. N 16/893006 : Filed 04.06.2020 : Pub. 15.11.2022 : / Chen Tian ; Assignee Guangdong Oppo Mobile Telecommunications Corp Ltd ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US11502535/en?oq=US11502535.html (дата обращения: ДД.ММ.ГГГГ).