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Pat. 10554115 United States, Int. Cl.22 H01F 27/42, H01F 37/00, H01F 38/00, H02J 50/12, H02J 50/70, H02M 1/12, H02M 3/335. Harmonic reduction apparatus for wireless power transfer systems : Appl. N 15/933518 : Filed 23.03.2018 : Pub. 04.02.2020 : / Hengchun Mao ; Assignee Nuvolta Technologies Inc ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US10554115/en?oq=US10554115.html (дата обращения: ДД.ММ.ГГГГ).