Charles Rood Keeran

Charles Rood Keeran (April 16, 1883 - June 9, 1948) was an Illinois inventor and businessman.

After achieving a master's degree in engineering, he soon began patenting his ideas (circa 1906) which continued throughout his lifetime: Keeran's 2-piece vacuum seal for Mason jars, which became the standard for home-canning, was immediately popular.

However, he sold off his company, White Crown Fruit Jar, in order to finance his favorite invention: the Eversharp mechanical pencil.

He relocated to Evanston, Illinois, and entered into a business alliance with the Wahl Adding Machine Company in Chicago.

Keeran felt that his invention and suggestions during his association with Wahl were the basis of their prosperity.