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Pat. 11050222 United States, Int. Cl.22 H01T 19/00, F02P 3/04, F02P 5/15, F02P 23/04, G01M 15/02, G01N 27/02, H01T 15/00, H02M 3/00, F02P 17/00. Concurrent method for resonant frequency detection in corona ignition systems : Appl. N 16/222690 : Filed 17.12.2018 : Pub. 29.06.2021 : / John Antony Burrows ; Assignee Tenneco Inc ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US11050222/en?oq=US11050222.html (дата обращения: ДД.ММ.ГГГГ).