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What was the very first patent issued by the United States government?
1780 - Benjamin Franklin invents bifocal eyeglasses.
1783 - The Montgolfier brothers invent the hot air balloon.
1786 - John Fitch invents the steamboat.
1790 - Samuel Hopkins invents the process of making potash.
1836 - John Ruggles invents a traction wheel for steam locomotives.
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