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Pat. 9859806 United States, Int. Cl.22 H02M 5/22, F03D 9/25, H02J 3/34, H02J 3/38. Method and apparatus for obtaining electricity from offshore wind turbines : Appl. N 14/490311 : Filed 18.09.2014 : Pub. 02.01.2018 : / Debrup Das, Jiaqi Liang, Darren Tremelling, Jiuping Pan ; Assignee Abb Research Ltd Switzerland ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US9859806/en?oq=US9859806.html (дата обращения: ДД.ММ.ГГГГ).