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Pat. 10637293 United States, Int. Cl.22 H02J 50/12, H02J 50/40, H02M 7/48, H02M 7/5387, H02J 7/02, H02M 3/335. Dual-frequency mode transmitter for wireless power transfer : Appl. N 15/718767 : Filed 28.09.2017 : Pub. 28.04.2020 : / Daniel Jes Costinett, Chongwen Zhao ; Assignee University of Tennessee Research Foundation ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US10637293/en?oq=US10637293.html (дата обращения: ДД.ММ.ГГГГ).