Patents by Inventor John William Barfield

John William Barfield 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).

  • Barfield's non-slip spur
    Publication number: 20020062722
    Abstract: The “Barfield Non-Slip Spur” has the unique recessed chamber compartment that allows for stock to be inserted into the chamber for holding prior to the turning process. This feature does not allow slippage, boring, or splitting of the stock.
    Type: Application
    Filed: November 30, 2000
    Publication date: May 30, 2002
    Inventor: John William Barfield