Patents by Inventor Leon E. Simpson

Leon E. Simpson 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).

  • Extendable tailgate ladder assembly
    Patent number: 6270139
    Abstract: A extendable tailgate ladder assembly for providing improved accessibility for truck beds. The extendable tailgate ladder assembly includes a ladder, a pair of tracks, a pair of feet, a cover member, a plurality of first connection members and a plurality of second connection members.
    Type: Grant
    Filed: April 12, 2000
    Date of Patent: August 7, 2001
    Inventor: Leon E. Simpson