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Discussion :: Inventions

  1. Who is the only U.S. President to invent and patent something?

    2. A.
    Abraham Lincoln
    B.
    Theodore Roosevelt
    C.
    Thomas Jefferson
    D.
    Rutherford B. Hayes

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    Answer : Option A

    Explanation :

    In 1849 Honest Abe invented a method to aid ships that got stuck on sandbars. He called it A Device for Buoying Vessels Over Shoals. It was never used.

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