Patents Assigned to C. Robert VON Hellens
  • Skateboard having flexible sides
    Patent number: 4295656
    Abstract: A longitudinally oriented curved spine of laminated hardwoods is encased between layers of fiberglass, which layers extend laterally from the spine to define the plan form and upward lateral curvature of the board of a skateboard.
    Type: Grant
    Filed: July 2, 1979
    Date of Patent: October 20, 1981
    Assignee: C. Robert von Hellens
    Inventor: Arlan G. Moore
  • Fuselage mounted ornamentation for model sailplanes
    Patent number: D247583
    Type: Grant
    Filed: October 9, 1975
    Date of Patent: March 21, 1978
    Assignee: C. Robert VON Hellens
    Inventor: Charles H. Schuring