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Pat. 9899936 United States, Int. Cl.22 H02M 7/5387, H02M 1/12, H02M 7/44, H02P 27/08, H02M 1/00, H02M 7/483, H02M 7/497. Offset voltage generator and method for generating an offset voltage of three-phase inverter : Appl. N 15/098238 : Filed 13.04.2016 : Pub. 20.02.2018 : / Hak-Jun Lee ; Assignee Lsis Co Ltd ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US9899936/en?oq=US9899936.html (дата обращения: ДД.ММ.ГГГГ).