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Pat. 10020660 United States, Int. Cl.22 H02J 7/00, H02J 7/04, H02J 7/16, H02M 3/335. Bidirectional DC-DC converter : Appl. N 15/338227 : Filed 28.10.2016 : Pub. 10.07.2018 : / Bong Koo Kang, Sang Won Lee, Kyung Min Lee, Yoon Geol Choi ; Assignee Academy Industry Foundation of Postech ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US10020660/en?oq=US10020660.html (дата обращения: ДД.ММ.ГГГГ).