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Pat. 11196292 United States, Int. Cl.22 H02J 9/06, H02M 1/08, H02M 1/14, H02M 7/21, H02M 7/537, H02M 1/42. Uninterruptible power supply system : Appl. N 17/057839 : Filed 31.05.2018 : Pub. 07.12.2021 : / Toshiki Nakamori ; Assignee Toshiba Mitsubishi Electric Industrial Systems Corp ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US11196292/en?oq=US11196292.html (дата обращения: ДД.ММ.ГГГГ).