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Pat. 10141733 United States, Int. Cl.22 H02H 9/04, H02H 3/20, H02H 7/122, H02M 5/458, H02P 27/06, H02H 6/00. Variable frequency drive overvoltage protection : Appl. N 14/795487 : Filed 09.07.2015 : Pub. 27.11.2018 : / Nathan Thomas West, David Marshall Foye, Korwin Jay Anderson ; Assignee Trane International Inc ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US10141733/en?oq=US10141733.html (дата обращения: ДД.ММ.ГГГГ).