Historydraftbeta HistorydraftbetaWhat happened 1878AD in United States of America
Check most memorable events 1878AD in United States of America.New Jersey, U.S. Monday Oct 14, 1878 Incandescent light bulb
Edison filed his first patent Application for "Improvement In Electric Lights"
New Jersey, U.S. Monday Oct 14, 1878 Thomas Edison began serious research into developing a practical incandescent lamp in 1878. Edison filed his first patent application for "Improvement In Electric Lights" on 14 October 1878.
