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[QUOTE]Originally posted by Daniel Butler: [QB] Pfft. Edison's phonograph was almost the only thing he actually invented. He took the credit for what the people in his lab invented, or else he's credited with something that he didn't invent at all but only improved upon. For example, the light bulb, his most famous 'invention,' was fairly well established by the time he got to it: [QUOTE][qb]In addressing the question "Who invented the incandescent lamp?" historians Robert Friedel and Paul Israel [1] list 22 inventors of incandescent lamps prior to Swan and Edison. They conclude that Edison's version was able to outstrip the others because of a combination of factors: an effective incandescent material, a higher vacuum than others were able to achieve and a high resistance lamp that made power distribution from a centralized source economically viable.[/qb][/QUOTE](From wikipedia) [/QB][/QUOTE]
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