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Pat. 11201472 United States, Int. Cl.22 H02J 3/34, H02J 3/08, H02J 3/14, H02J 13/00, H02M 5/297. Power transmission system capable of preventing power transmission efficiency from degrading due to frequency mismatch and loss of synchronization : Appl. N 16/490422 : Filed 26.02.2018 : Pub. 14.12.2021 : / Masahiro Yamaoka, Atsushi Yamamoto, Motohiko Fujimura, Taiki Nishimoto ; Assignee Panasonic Intellectual Property Management Co Ltd ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US11201472/en?oq=US11201472.html (дата обращения: ДД.ММ.ГГГГ).