Patents Assigned to Douglas Leigh Research and Development Corporation
  • Water sports wheel
    Patent number: 3934291
    Abstract: A unitary hollow paddle wheel of a size to receive a person in upright position and composed of two circular pneumatic tubes connected in spaced relation by transverse members that also support a tread which is operated by the person within the wheel to propel the same in a forward or backward direction and through which the person may observe his progress.
    Type: Grant
    Filed: August 23, 1974
    Date of Patent: January 27, 1976
    Assignee: Douglas Leigh Research and Development Corporation
    Inventor: Frederic Hagen