Patents by Inventor Billy L. Cardwell

Billy L. Cardwell 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).

  • Truck rail arrangement
    Patent number: 4872719
    Abstract: Truck rails for pickup trucks and the like include the use of swivel connectors which permit the rails to be attached concurrently to the truck sides, headache rack, and tool box.
    Type: Grant
    Filed: July 21, 1988
    Date of Patent: October 10, 1989
    Inventor: Billy L. Cardwell