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Pat. 11404202 United States, Int. Cl.22 H01F 27/32, H01F 3/14, H01F 27/28, H01F 27/34, H02M 3/335. Planar transformer and DC-DC converter : Appl. N 16/630071 : Filed 06.07.2018 : Pub. 02.08.2022 : / Fumihiro Okazaki, Satoshi Ogasawara, Hirohito Funato ; Assignee Utsunomiya University, Hokkaido University Nuc, Marelli Corp ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US11404202/en?oq=US11404202.html (дата обращения: ДД.ММ.ГГГГ).