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Pat. 10491124 United States, Int. Cl.22 H02M 3/335, H02M 1/00, H02M 1/08, H02M 1/14, H05B 37/02, H05B 44/00. BiFRED converter and a method of driving an output load : Appl. N 16/300031 : Filed 10.05.2017 : Pub. 26.11.2019 : / Dennis Johannes Antonius Claessens, Hui Zhang, Hong Jiang ; Assignee Signify Holding Bv ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US10491124/en?oq=US10491124.html (дата обращения: ДД.ММ.ГГГГ).