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Pat. 10811900 United States, Int. Cl.22 H02J 9/00, H02J 3/38, H02J 7/35, H02J 9/06, H02M 3/158, H02M 7/219. Uninterruptible power supply system and uninterruptible power supply apparatus : Appl. N 16/475243 : Filed 04.01.2017 : Pub. 20.10.2020 : / Shoichi Abe ; Assignee Toshiba Mitsubishi Electric Industrial Systems Corp ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US10811900/en?oq=US10811900.html (дата обращения: ДД.ММ.ГГГГ).