Библиографическая ссылка на патент
Pat. 11431242 United States, Int. Cl.22 H02M 3/156, A24F 40/05, A24F 40/53, H02M 3/04. Oscillation control circuit for ultrasonic atomization sheet and ultrasonic electronic cigarette : Appl. N 16/488211 : Filed 05.01.2018 : Pub. 30.08.2022 : / Jianfu Liu, Kejun Zhong, Xiaoyi Guo, Wei Huang, Hong Yu, Yuangang Dai, Xinqiang Yin, Jianhua Yi, Guangping Cao ; Assignee China Tobacco Hunan Industrial Co Ltd ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US11431242/en?oq=US11431242.html (дата обращения: ДД.ММ.ГГГГ).