Dur-O-Lite Pencil Company

The Dur-O-Lite Pencil Company was a Chicago, Illinois, United States company that manufactured mechanical pencils from the 1920s into the 1990s. The company registered the "Dur-O-Lite" trademark in 1927. John P. Lynn was a founder of the company and was long associated with Dur-O-Lite. Lynn had earlier been a founder of the Autopoint Company which was Dur-O-Lite's main competitor.

See additional information by Robert L. Bolin: [1]

In 1993, Dur-O-Lite ceased all manufacturing operations.