Patents by Inventor Patricia Duke

Patricia Duke 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).

  • Shredding machine for recycling
    Patent number: D342965
    Type: Grant
    Filed: February 12, 1992
    Date of Patent: January 4, 1994
    Inventors: Jerry Duke, Patricia Duke