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Pat. 11378294 United States, Int. Cl.22 H04B 3/02, F24F 11/46, G05B 19/042, H02M 3/335, H02M 1/44, H04B 3/54. Air conditioner current loop communication circuit and air conditioner : Appl. N 16/750445 : Filed 23.01.2020 : Pub. 05.07.2022 : / Lizhi Su, Zhaojing Huo ; Assignee Midea Group Co Ltd, Gd Midea Air Conditioning Equipment Co Ltd ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US11378294/en?oq=US11378294.html (дата обращения: ДД.ММ.ГГГГ).