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Pat. 10447141 United States, Int. Cl.22 H02M 1/08, H02M 3/335, H03F 3/45, H03K 17/687. Waveform shaping circuit, semiconductor device, and switching power supply device : Appl. N 16/223228 : Filed 18.12.2018 : Pub. 15.10.2019 : / Tatsuya Hirose ; Assignee Fujitsu Ltd ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US10447141/en?oq=US10447141.html (дата обращения: ДД.ММ.ГГГГ).