Nikola Tesla By allibooxx Jul 10, 1856 Birth of Nikola Tesla Sep 10, 1885 Nikola Tesla Sells Patent of the Ootmr To an American businessman, the head of Westinghouse Electric Company. Sep 10, 1893 Patent Used to Power 25,000 Lights At the Chicago World Fair. Jan 7, 1943 Death of Nikola Tesla