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Pat. 10439719 United States, Int. Cl.22 H04B 10/116, H02M 1/42, H02M 3/335, H05B 37/02, H05B 44/00, H02M 1/00, H02M 1/14, H02M 3/156, H04B 10/50. Lighting device, luminaire, and signboard : Appl. N 15/984368 : Filed 20.05.2018 : Pub. 08.10.2019 : / Keisuke Seki, Shigeru Ido, Kazuhiko Hayashi ; Assignee Panasonic Intellectual Property Management Co Ltd ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US10439719/en?oq=US10439719.html (дата обращения: ДД.ММ.ГГГГ).