Which African-American inventor patented an improved method for producing durable carbon filaments in 1882?
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Lewis Latimer revolutionized electric lighting by inventing a way to encase carbon filaments in cardboard envelopes. This prevented the carbon from breaking easily, making light bulbs much cheaper to produce and far more durable for everyday use in homes. Photo: Unknown authorUnknown author, Wikimedia Commons, Public domain.
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Source: Wikipedia (CC BY-SA)
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