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Who Invented Halloween?
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Who Invented the Pencil Sharpener?
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Who Invented the Overhead Projector?
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Who Invented Carbon Nanotubes?
Technology
Who Invented the Sony Walkman?
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Who Invented the Stagecoach?
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Who Invented the Sewing Machine?
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Who Invented the Sandwich?
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Who Invented the Microphone?
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Who Invented the Scientific Method?
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