During his early career, he worked with Alexander Graham Bell and provided the drawings for Bell's patent application for the telephone. Latimer also worked with Herman Maxim, the inventor of the machine gun. With Maxim's assistance, Latimer was able to invent and patent the first electric lamp with a carbon filament. Using his invention, Latimer supervised the installation of electric street lighting for the cities of Philadelphia, London (England), and New York.
In addition to his inventions, Latimer is known for his writings. His book on electricity, Incandescent Electric Lighting: A Practical Description of the Edison System was published in 1890. Latimer died in 1928 at the age of 80.
References
Sertima, I.V. (1986). Blacks in Science: Ancient and Modern. New Brunswick, CT: Journal of African Civilizations.