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Pat. 10312694 United States, Int. Cl.22 H02J 3/40, H02J 3/38, H02M 1/42, H02M 7/42. Mode-based output synchronization using relays and a common time source : Appl. N 15/631007 : Filed 23.06.2017 : Pub. 04.06.2019 : / Scott M. Manson ; Assignee Schweitzer Engineering Laboratories Inc ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US10312694/en?oq=US10312694.html (дата обращения: ДД.ММ.ГГГГ).