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Pat. 9899138 United States, Int. Cl.22 H01F 5/00, H01F 27/28, H01F 27/29, H02J 7/02, H02M 7/537. Coil structure for generating a uniform magnetic field and coil apparatus having the same : Appl. N 15/393958 : Filed 29.12.2016 : Pub. 20.02.2018 : / Chien-Chih Lu, Tzyy-Haw Huang ; Assignee Automotive Research and Testing Center ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US9899138/en?oq=US9899138.html (дата обращения: ДД.ММ.ГГГГ).