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Nobel Prize 2014: Inventor of the red LED hits out at committee for
Replica of Thomas Edison's First Electric Lamp | PBS LearningMedia
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Light Bulb Invention: (The Complete History) - Science4Fun
Thomas Edison's patents protected his ideas | ShareAmerica
The history of electric lighting - Country Life
Who Invented The Light Bulb Before Thomas Edison Got All The Credit?
Thomas Edison Patents: The Lightbulb & Beyond