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





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  • By: Mahi on 23 May 2018 06.28 pm
    ANSWER IS Thomos jefferson
  • By: guest on 02 Jun 2017 01.22 am
    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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