Patents by Inventor Paul R. Hirt

Paul R. Hirt 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).

  • Adjustable post-surgical shoe
    Patent number: 4178925
    Abstract: An adjustable post-surgical shoe having two sole portions which are slidably connected by a pin and tube means and which has a separate means for securing the sole portions in adjusted positions.
    Type: Grant
    Filed: March 7, 1978
    Date of Patent: December 18, 1979
    Inventor: Paul R. Hirt