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Pat. 11375321 United States, Int. Cl.22 H04R 25/00, H01F 27/24, H01F 38/14, H02M 3/08, H02M 7/10, H04B 5/00, H04R 3/04, H04R 25/02, H02J 50/12, H02M 7/06. Eartip venting in a contact hearing system : Appl. N 17/159493 : Filed 27.01.2021 : Pub. 28.06.2022 : / Lindsay M. Prusick, Patricia H. Ho, Drew Dundas, Paul Rucker ; Assignee Earlens Corp ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US11375321/en?oq=US11375321.html (дата обращения: ДД.ММ.ГГГГ).