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Pat. 10937300 United States, Int. Cl.22 G08B 29/04, G08B 3/10, G08B 5/36, G08B 21/18, H02M 7/00, H04N 7/18, H05B 45/10, H05B 45/30. Radio frequency transmission device that triggers electromechanical actions wirelessly using smart device electrical behavior : Appl. N 16/661947 : Filed 23.10.2019 : Pub. 02.03.2021 : / Vinay Gupta ; Assignee Ohnkat Inc ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US10937300/en?oq=US10937300.html (дата обращения: ДД.ММ.ГГГГ).