Patents by Inventor Harold H. Curtiss

Harold H. Curtiss 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).

  • Exercise device
    Patent number: 4964630
    Abstract: An exercise device is provided in the form of two elongated, cylindrical-shaped members for the exercise of one's hands and the fingers and thumb. The two elongated members are held in the palm of one's hand and are caused to rotate one about the other by the manipulation of the fingers and thumb against the elongated members.
    Type: Grant
    Filed: February 24, 1989
    Date of Patent: October 23, 1990
    Inventor: Harold H. Curtiss