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.