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Pat. 10892685 United States, Int. Cl.22 H02M 3/335, G03G 15/00, H02M 1/00, H02M 1/092, H02M 7/06. Power supply device and image forming apparatus having the same : Appl. N 16/325675 : Filed 16.08.2017 : Pub. 12.01.2021 : / An-Sik Jeong, Hong-Ki Jung ; Assignee Hewlett Packard Development Co Lp ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US10892685/en?oq=US10892685.html (дата обращения: ДД.ММ.ГГГГ).