Patents by Inventor Erma N. Anderson

Erma N. Anderson 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 for physical therapy
    Patent number: 4613131
    Abstract: A solid, rigid foam device having a continuous outer skin, a flat, circular upper surface that merges smoothly into a symmetric, oblated spherical surface, the upper surface having four, spaced, shallow indentations around its periphery and a number of anchor points that do not extend above the flat surface, the anchor points typically being nuts embedded in the foam plastic body.
    Type: Grant
    Filed: November 26, 1985
    Date of Patent: September 23, 1986
    Inventor: Erma N. Anderson