PPT - Thomas Edison: Inventor of:- The light bulb, PowerPoint Presentation - ID:1868482
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In October 1879, Edison "perfected" the light bulb | Signify Company Website
Thomas Edison's Patent Application for the Light Bulb (1880) | National Archives
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History of the lightbulb from incandescent to compact fluorescent
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Who Invented the Lightbulb?
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Electric light - Wikipedia
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Thomas Edison Lights the Way – NTC's Professional Educators Network
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Thomas Edison Invents Light Bulb and Myths About Himself | Time
Edison light bulb, 1890 - Stock Image - C013/9073 - Science Photo Library
Thomas Edison - Wikipedia
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