Abraham Lincoln was the only president with a patent:
It should not be too surprising that young Abe Lincoln shares more in common with Doc
Brown than Van Helsing, but it has little to do with science fiction and everything to do with the US Patent Office. Specifically, US Patent No. 6,469: a device for “buoying vessels over shoals” according to its inventor, a 40-year-old Abraham Lincoln. Apparently, this self-taught prairie lawyer also taught himself how to buoy vessels in his early 20s, when a flatboat he worked on ran aground on a milldam in New Salem, Illinois. As retold by his friend and bodyguard Ward Hill Lamon: “the boat stuck for one night and the better part of a day … in momentary danger of breaking in two, or sinking outright.” Fortunately, the 23-year-old Lincoln was able to engineer his way out of the predicament with a “singular experiment” that everyone in New Salem apparently came to watch. Despite reading like a mix between a folk tale and a 19th-century episode of MacGyver, such is the fascinating history behind the device currently on display in the Smithsonian as the first and only patented invention attributed to a US president.
(Image via the Lincoln Financial Foundation Collection, Lincoln Library/Internet Archive)
The Dish 