He worked as a telegrapher (1862 – 68) before deciding to pursue invention and entrepreneurship
The electric pen.
Edison invented the carbon-button transmitter
incandescent lightbulb (1879).
known as:The man who invented the light bulb
He supervised the installation of the world's first permanent commercial central power system, in lower Manhattan.
He built a new laboratory in West Orange, N.J. Its first major endeavour was the commercialization of the phonograph, which Alexander Graham Bell had improved on since Edison's initial invention.
Yet another major invention, the nickel-alkaline storage battery with lithium.
Naval secretary Josephus Daniels enlisted Edison to organize and chair a Naval Consulting Board to provide technical counsel to the navy.
Edison was the most prolific inventor of all time, receiving 1093 patents in the United States alone and laying the groundwork for many technological innovations of the 20th century.
Died
still used in telephone speakers and microphones today. the phonograph (1877
