D. Mason Allen

Person

  • Altamonte Springs, FL, US

Patents Grantslast 30 patents

  • Information Patent Grant

    Skateboard

    • Patent number 4,887,825
    • Issue date Dec 19, 1989
    • D. Mason Allen
    • A63 - SPORTS GAMES AMUSEMENTS
  • Information Patent Grant

    Water level control

    • Patent number 4,853,986
    • Issue date Aug 8, 1989
    • The Awareness Marketing Corporation
    • D. Mason Allen
    • E04 - BUILDING