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Pat. 11366165 United States, Int. Cl.22 H05K 7/20, G01R 19/165, G01R 31/34, H02M 7/5387, H02P 27/06, H04B 10/25. DC monitoring system for variable frequency drives : Appl. N 16/593170 : Filed 04.10.2019 : Pub. 21.06.2022 : / Mark Richter, Robert Pompeani, Arya Bannazadeh-Mahani, Edward Winterberger ; Assignee Power Standards Lab Inc ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US11366165/en?oq=US11366165.html (дата обращения: ДД.ММ.ГГГГ).