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Thomas Jefferson as Inventor and MakerMakezine has a nice Presidents' Day entry celebrating Thomas Jefferson as an inventor and maker. Among the inventions called out: "Moldboard of least resistance" - using math, Jefferson designed a better plow to lift and turn over sod more effectively - this new plow had a huge impact and instead of patenting the invention, Jefferson gave it away it - to be "solely used for the good of the people and not for the advancement of the inventor, Jefferson encouraged public use of this easily duplicated invention".
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