Lewis Howard Latimer, born September 4, 1848 in Chelsea Massachusetts, was an African-American inventor. On February 10, 1874, he was granted a patent with Charles Brown for an improved toilet system for railroad cars called the Water Closet for Railroad Cars. (U.S. Patent 147,363).
In 1879, Latimer went on to draft drawings necessary for Alexander Graham Bell's telephone. In 1881, he invented a light bulb with a carbon filament to improve Thomas Edison's original work. Latimer received a patent in 1882 for the process of manufacturing carbons. He was inducted into the National Inventors Hall of Fame for his work on electric filament manufacturing techniques.
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