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Thomas Edison - Wikipedia
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Thomas Edison's Patent Application for the Light Bulb (1880) | National Archives
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The Electric Light System - Thomas Edison National Historical Park (U.S. National Park Service)
In October 1879, Edison "perfected" the light bulb | Signify Company Website
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ComEd on Twitter: "While many believe Thomas Edison invented the light bulb, this moment in High-Voltage #History tells the true tale! https://t.co/5vAcdUppEH" / Twitter