Chester Carlson Invents Machine To Copy Documents
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Arrested Alchemist Must Make Gold To Win Freedom
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Stage Actor Charlie Chaplin Tries Making Movies
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Ferry Boatman Challenges Steamboat Monopoly
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Churchill Expects Trouble from Nazis
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Charles Babbage Invents Mechanical Calculator
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Printer Invents Typewriting Machine
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Lindbergh Takes Off On Transatlantic Flight
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Earth May Revolve Around Sun
The model department of the United States Patent Office in Washington is illuminated here and there with the original models of the very great...
Dictionary Project Falls Behind Schedule
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