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Pat. 9942953 United States, Int. Cl.22 H05B 44/00, H02M 1/42, H02M 7/217. Power supply device serving as DC power supply, and lighting fixture : Appl. N 15/190808 : Filed 23.06.2016 : Pub. 10.04.2018 : / Kiyoshi Ogasawara, Takafumi Fujino ; Assignee Panasonic Intellectual Property Management Co Ltd ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US9942953/en?oq=US9942953.html (дата обращения: ДД.ММ.ГГГГ).