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Pat. 10784710 United States, Int. Cl.22 H02H 7/122, H02J 3/00, H02J 3/38, H02J 7/00, H02J 7/35, H02J 9/06, H02M 1/32, H02M 1/36, H02M 7/537, H02M 7/5387, H02H 3/16. Transformerless DC to AC converter : Appl. N 15/676692 : Filed 14.08.2017 : Pub. 22.09.2020 : / Paul Wilkinson Dent ; Assignee Koolbridge Solar Inc ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US10784710/en?oq=US10784710.html (дата обращения: ДД.ММ.ГГГГ).