Patents by Inventor Dean L. Libra

Dean L. Libra 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).

  • Snow scoop
    Patent number: D334515
    Type: Grant
    Filed: February 13, 1991
    Date of Patent: April 6, 1993
    Inventors: Dean L. Libra, Michael A. Knopf