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Pat. 11462349 United States, Int. Cl.22 H01F 17/06, H01F 27/08, H01F 27/10, H01F 27/245, H01F 27/26, H02M 1/14, H02M 7/00. Resonance damping element and power converter with the same : Appl. N 16/500584 : Filed 21.04.2017 : Pub. 04.10.2022 : / Marko Koskela, Jukka Linna, Vesa Vaisanen ; Assignee Vacon Oy ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US11462349/en?oq=US11462349.html (дата обращения: ДД.ММ.ГГГГ).