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Pat. 10050469 United States, Int. Cl.22 H02J 9/06, H02J 3/38, H02J 7/12, H02M 7/12, H02M 7/493. Uninterruptible power supply device and uninterruptible power supply system using the same : Appl. N 15/562075 : Filed 01.04.2015 : Pub. 14.08.2018 : / Kazuki Nishimura, Hiroshi Masunaga, Masahiro Kinoshita ; Assignee Toshiba Mitsubishi Electric Industrial Systems Corp ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US10050469/en?oq=US10050469.html (дата обращения: ДД.ММ.ГГГГ).