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Pat. 10056765 United States, Int. Cl.22 H02J 7/00, H02J 1/00, H02M 3/06, H02M 3/335, H02J 7/34. Electrical energy storage apparatus having a balun for balancing voltages of storage cells : Appl. N 15/105776 : Filed 11.12.2014 : Pub. 21.08.2018 : / Wolfgang Schuster, Sven Welser ; Assignee Liebherr Components Biberach Gmbh ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US10056765/en?oq=US10056765.html (дата обращения: ДД.ММ.ГГГГ).