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Pat. 10365673 United States, Int. Cl.22 H02M 3/157, G05F 1/44, H02H 9/02, H02M 5/293, H03F 1/52, H03K 17/082, H02M 1/32, H03K 17/08, H04R 3/00. Digitally controlled AC protection and attenuation circuit : Appl. N 15/699574 : Filed 08.09.2017 : Pub. 30.07.2019 : / Joel Butler ; Assignee Dolby Laboratories Licensing Corp ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US10365673/en?oq=US10365673.html (дата обращения: ДД.ММ.ГГГГ).