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Edison works on his lightbulb, Thomas Edison. 1880-1886 | Christie's
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File:Drawing of the Incandescent Light Bulb by Thomas Edison, 01-27-1880 (Page 2 of 2) (5286032832).jpg - Wikimedia Commons
Edison's light bulb turns 135 | National Museum of American History
By: Maryanne Garcia. What did people use before the light bulb? What did people use before the light bulb? What was the reason for inventing the light. - ppt download
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