Patents by Inventor Rita C. Unverferth

Rita C. Unverferth 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).

  • Toe sock
    Patent number: D331830
    Type: Grant
    Filed: January 4, 1991
    Date of Patent: December 22, 1992
    Inventor: Rita C. Unverferth