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Pat. 10630191 United States, Int. Cl.22 H02M 3/335, H01F 27/06, H01F 27/30, H02M 3/338, H02M 1/00. Transformer and LLC resonant converter having the same : Appl. N 15/972079 : Filed 04.05.2018 : Pub. 21.04.2020 : / Sang-Keun Ji, Sang-Kyoo Han, Cheol-Wan Park, Dong-Kyun Ryu, Heung-Gyoon Choi ; Assignee Solum Co Ltd ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US10630191/en?oq=US10630191.html (дата обращения: ДД.ММ.ГГГГ).