Edison didn't invent the light bulb he bought the patent and then work on filaments and encased it in a vacum in glass. Here is a decent history of the light bulb: http://inventors.about.com/library/inventors/bllight2.htm
The light bulb was invented by Thomas Alva Edison in 1879.
Joseph Swan invented the first electric vacuum light bulb with a carbon fibre filament. About a year later, Thomas Eddison invented a similar bulb. Swan had already got a patent for the bulb though, and sued Eddison for the patent rights.After that, the pair worked together and merged companies. Swan later improved the filament used in the bulbs, though Eddison continued to use an inferior filament for a while. Eddison's company was eventually to become the USA's General Electric.The first electric light bulb however, as unpractical as it was, was invented by Humphry Davy in 1809.
Thomas Edison invented the light bulb in 1879.
The light bulb was created in 1882 by Thomas Edison.
Joseph Swan invented light bulb in 1879
The flourescent light bulb was invented in 1827.
Thomas Alva Edison invented the light bulb in 1877.
Thomas Edison invented the light bulb 1876 an the camera 1890
Thomas Edison invented the first light bulb that was available for commercial use in 1879. The light bulb was first used in Menlo Park.
Humphry Davy did not invent the light bulb. The first practical incandescent light bulb was invented by Thomas Edison in 1879. Davy was a chemist and inventor known for his work with electricity and the development of the miner's safety lamp.
The first electric light was made by Humphry Davy in 1800. But it was not practical. A practical light bulb was developed by Thomas Edison in 1879. The light bulb revolutionized the world by making it possible to carry on near normal behavior at night. Prior to the light bulb people had only the dim light of candles and flame lamps.
Thomas Edison did not invent the lightbulb. The lightbulb was first created by a Belgian man named Jobard in 1835 and Frederick de Moleyns obtained the first patent for such a bulb in 1841. Thomas Edison invented an improved version of the bulb in 1879.