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Pat. 10312791 United States, Int. Cl.22 H02M 3/07, H02M 1/08, H03K 3/356, H02M 1/00. Negative high-voltage generation device with multi-stage selection : Appl. N 16/025205 : Filed 02.07.2018 : Pub. 04.06.2019 : / Ming-Dou Ker, Shiau-Pin Lin ; Assignee National Chiao Tung University Nctu ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US10312791/en?oq=US10312791.html (дата обращения: ДД.ММ.ГГГГ).