Thomas Edisons Inventions by Jay Grimone By efianu Feb 20, 1874 Invents the Quadruplex Telegraph Life of Thomas Edision </a><a href='http://edison.rutgers.edu/quad.htm' >The Quadruplex Telegraph</a> Feb 20, 1875 Invents the electric pen electric pen Feb 20, 1877 Invents the carbon transmitter carbon trasmitter Feb 20, 1879 Invents carbon filament lamp filament lamp Feb 20, 1888 Perfects phonograph http://www.personal.psu.edu/jtk187/art2/phonograph.htm Jan 1, 1900 Begins working on electric car battery begis car battery Feb 20, 1909 Markets his alkaline storage battery Markets his alkaline storage battery Feb 20, 1915 Starts his new military technology Markets his alkaline storage battery
