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  A British inventor known as Henry Round announces light emission from crystal detector.
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  twenty years later “Oleg Losev notes that silicon carbide crystals diodes used dios glowed when when excited by an electrical current”
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  A man called William Shockley, also the co-inventor of the transistor “files a patent for an infrared LED”
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  The first practical "visible-spectrum” LED is created
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  “the first high-brightness, high-efficiency LED's for fiber optical telecommunications” is created
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  the Audi was the first car to completely use LED headlights