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Pat. 10641817 United States, Int. Cl.22 G01R 31/34, G01R 31/14, H02M 5/458, H02P 5/00, G01R 27/02, G01R 27/18, H02M 1/00, H02P 5/74. Motor driving device and measuring method : Appl. N 16/199752 : Filed 26.11.2018 : Pub. 05.05.2020 : / Norihiro Chou, Youichirou Ooi ; Assignee Fanuc Corp ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US10641817/en?oq=US10641817.html (дата обращения: ДД.ММ.ГГГГ).