Abraham Lincoln 's patent is a patent for an invention to lift boats over shoals and obstructions in a river. It is the only United States patent ever registered to a Issue date : May 22, 1849.
(Abraham Lincoln's Patent). AMONG the registered patents in the Patent Office at Washington is one for buoying vessels through shallow waters, taken out some.
Abraham Lincoln's "manner of buoying vessels" was patented on May 22, Here's how he came up with the idea. View Table of Contents. From Wikipedia, the free encyclopedia. Be it known that I, Abraham Lincoln, of Springfield, in the county of. After forcing enough of them under the vessel she lifted. However, it was never produced for practical use.