Crenshaw, John

Company: 

Westclox

Alternate Name Forms: 

John C. Crenshaw

Patents:


Role: Inventor Title: Digital Clock Number: Des. 240023 Issue Date: 1976-05-25
Role: Inventor Title: Clock Number: Des. 247741 Issue Date: 1978-04-18
Role: Inventor Title: Timer Number: Des. 251058 Issue Date: 1979-02-13