Patents by Inventor David Franklin Duke

David Franklin 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).

  • Wash fixture to hold circuit boards
    Patent number: D807415
    Type: Grant
    Filed: October 21, 2015
    Date of Patent: January 9, 2018
    Assignee: STONE MOUNTAIN TOOL
    Inventors: David Franklin Duke, Steven Ray Hughes, Anthony Wayne Patton