Thomas Edison - Wikipedia
It was Thomas Edison who invented the lightbulb. He was neither the first nor the only person trying to invent an incandescent light bulb. He. - ppt download
Edison's light bulb turns 135 | National Museum of American History
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In October 1879, Edison "perfected" the light bulb | Signify Company Website
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Light bulb - Simple English Wikipedia, the free encyclopedia
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Joe Biden: Thomas Edison Didn't Invent the Light Bulb, a Black Man Did | Al Bawaba
Thomas Edison didn't invent the light bulb—but here's what he did do
Nalanda School - #history of Inventions Thomas Edison invented light-Bulb in the year 1879. | Facebook
Thomas Edison's Patent Application for the Light Bulb (1880) | National Archives
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Who Invented the Lightbulb?
