Patents Assigned to David W. Alley
  • Tongue toothbrush
    Patent number: 3959842
    Abstract: A tongue toothbrush adapted to be mounted with the tongue both for loosening particulate matter entrapped between the teeth and for cleansing the teeth.
    Type: Grant
    Filed: April 18, 1975
    Date of Patent: June 1, 1976
    Assignees: Pravel & Wilson, David W. Alley
    Inventor: David W. Alley