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Pat. 10938297 United States, Int. Cl.22 H02M 1/34, H02M 1/32, H02M 7/12, H02M 7/155, H02M 7/162, H02M 7/19, H02M 1/08. AC-DC conversion device and method for controlling same by controlling the timing of multiple switch portions : Appl. N 16/419617 : Filed 22.05.2019 : Pub. 02.03.2021 : / Keisuke Hattori, Teruo Yoshino, Tomohisa Okami ; Assignee Toshiba Mitsubishi Electric Industrial Systems Corp ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US10938297/en?oq=US10938297.html (дата обращения: ДД.ММ.ГГГГ).