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Pat. 10449570 United States, Int. Cl.22 A61B 18/14, A61B 17/32, A61F 9/007, B06B 1/02, H03F 1/02, A61B 17/00, A61B 17/14, A61B 18/00, A61B 18/18, A61B 90/98, H02M 3/158, H03F 3/45. System and method for driving an ultrasonic handpiece with a linear amplifier : Appl. N 15/805849 : Filed 07.11.2017 : Pub. 22.10.2019 : / Adam D. Downey, Neal R. Butler, Scott A. Rhodes ; Assignee Stryker Corp ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US10449570/en?oq=US10449570.html (дата обращения: ДД.ММ.ГГГГ).