Patents Assigned to Spiral Productions, Inc.
  • Toy boomerang
    Patent number: 3955817
    Abstract: A toy boomerang having a hub and four wings extending therefrom, the wings having downwardly extending lifting surface at wing tips. A rim extends around the boomerang, coupling together the wing tips. A stabilizing axle extends downward from the hub.
    Type: Grant
    Filed: August 23, 1973
    Date of Patent: May 11, 1976
    Assignee: Spiral Productions, Inc.
    Inventor: James E. Davis