Patents by Inventor Catherine Knapp

Catherine Knapp has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Amusement device
    Patent number: 4073504
    Abstract: An amusement device having means for treading thereon which causes a rolling action. The device includes a pair of straps for the stabilization of the user.
    Type: Grant
    Filed: February 9, 1976
    Date of Patent: February 14, 1978
    Inventor: Catherine Knapp