Future <a href="https://en.wikipedia.org/wiki/President_of_the_United_States" id="mwrQ" rel="mw:WikiLink" title="President of the United States">U.S. President</a> <a href="https://en.wikipedia.org/wiki/Abraham_Lincoln" id="mwrg" rel="mw:WikiLink" title="Abraham Lincoln">Abraham Lincoln</a> is issued a <a href="https://en.wikipedia.org/wiki/Patent" id="mwrw" rel="mw:WikiLink" title="Patent">patent</a> for an <a href="https://en.wikipedia.org/wiki/Abraham_Lincoln's_patent" id="mwsA" rel="mw:WikiLink" title="Abraham Lincoln's patent">invention to lift boats</a>, making him the only U.S. president to ever hold a patent.