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Events on Tuesday 27 January 1880 1
1880Edison patents the incandescent lampLong-lasting carbon-filament bulb secured for commercial useThomas Edison received US patent 223,898 for an electric incandescent lamp on 27 January 1880, covering the carbon-filament design his laboratory had refined. The patent underpinned the rapid commercialization of electric lighting over the following decade. Edison Electric Light Company began installing systems in New York soon after.