who invented the light bulb ?
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Thomas Alva Edison
First practical incandescent lightbulb
Edison and his team of researchers in Edison's laboratory in Menlo Park, N.J., tested more than 3,000 designs for bulbs between 1878 and 1880. In Nov. 1879, Edison filed a patent for an electric lamp with a carbon filament, according to the National Archives.
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The invention of light bulb was made by Thomas Alva Edison.
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