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Pat. 9893640 United States, Int. Cl.22 H01F 30/14, H02M 5/14. Methods and apparatus for supplying three phase power : Appl. N 14/750464 : Filed 25.06.2015 : Pub. 13.02.2018 : / Shmuel Steinberg ; Assignee Set Electrical Engineering Pty Ltd ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US9893640/en?oq=US9893640.html (дата обращения: ДД.ММ.ГГГГ).