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Pat. 10693406 United States, Int. Cl.22 H02P 21/00, H02M 1/15, H02M 1/32, H02M 1/42, H02M 5/458, H02P 27/06, H02M 1/00. Variable speed drive with active converter : Appl. N 16/253054 : Filed 21.01.2019 : Pub. 23.06.2020 : / Konstantin A. Borisov, Ivan Jadric ; Assignee Johnson Controls Technology Co ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US10693406/en?oq=US10693406.html (дата обращения: ДД.ММ.ГГГГ).