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Pat. 10916947 United States, Int. Cl.22 H02J 3/36, H02J 3/38, H02M 7/04, H02M 7/44. System and method for direct current power transmission : Appl. N 15/129526 : Filed 27.03.2015 : Pub. 09.02.2021 : / Jie Shen, Zhihui Yuan, Christof Martin Sihler, Stefan Schroeder, Mark Aaron Chan, Fei Xu ; Assignee Ge Oil and Gas Uk Ltd ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US10916947/en?oq=US10916947.html (дата обращения: ДД.ММ.ГГГГ).