Patents by Inventor Leon A. Powell

Leon A. Powell 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).

  • Coupling element for trailer hitches
    Patent number: 4072320
    Abstract: A device securably mountable on a ball of the type used to couple with a socket for hitching a trailer to a towing vehicle to provide a coupling element for receiving a coupling member in the form of a terminal eye member attached to the trailer tongue.
    Type: Grant
    Filed: August 5, 1976
    Date of Patent: February 7, 1978
    Inventor: Leon A. Powell