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Pat. 11316478 United States, Int. Cl.22 H03F 1/02, G05F 1/46, G05F 1/56, H03F 1/34, H03F 3/45, H02M 3/156. Semiconductor device outputting reference voltage : Appl. N 16/783306 : Filed 06.02.2020 : Pub. 26.04.2022 : / Kei Takahashi, Yoshifumi Tanada ; Assignee Semiconductor Energy Laboratory Co Ltd ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US11316478/en?oq=US11316478.html (дата обращения: ДД.ММ.ГГГГ).