Inventor denied patent because he was a slave:
29 Aug '18 22:36https://paleofuture.gizmodo.com/the-story-of-the-american-inventor-denied-a-patent-beca-1828329907
He invented a lot of things but the one he tried to get a patent on would have revolutionized the paddlewheel river boats of the era.
He invented a lot of things but the one he tried to get a patent on would have revolutionized the paddlewheel river boats of the era.
