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Pat. 10944320 United States, Int. Cl.22 H02M 1/00, B06B 1/02, H02M 1/08, H02M 1/36, H02M 3/07, H02M 7/483. Efficient on-chip high-voltage driver circuit for ultrasonic transducer : Appl. N 15/958415 : Filed 20.04.2018 : Pub. 09.03.2021 : / Mitchell Kline, Richard Przybyla, David Horsley ; Assignee Chirp Microsystems Inc ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US10944320/en?oq=US10944320.html (дата обращения: ДД.ММ.ГГГГ).