Patents by Inventor Calvin K. Eskridge

Calvin K. Eskridge 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).

  • Automatic extension tongue
    Publication number: 20030132606
    Abstract: A boat trailer extension devise containing outside tube, inside tube, collar, travel pin, motor, gears and controls.
    Type: Application
    Filed: January 15, 2002
    Publication date: July 17, 2003
    Inventor: Calvin K. Eskridge