1878 Became the first to apply the term "filament" to a fine wire that glows when carrying an electric current. In a prophetic article in the North American Review he foreshadowed ten prominent uses for the phonograph - all since accomplished - including its combination with the telephone, which became a reality in 1914 with the perfection of the Telescribe.
1879 Invented the first commercially practical incandescent electric lamp. The lamp itself was perfected on October 21st, 1879, on which day there was put into circuit the first bulb embodying the principles known as the "Edison modern incandescent lamp." This bulb maintained its incandescence for over 40 hours.
This is from the web site below where you can find all of his inventions. Even if he didn't invent the light bulb he did a lot more to make him famous.
http://www.thomasedison.com/Inventions.htm