Patents by Inventor John D. Graber

John D. Graber 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).

  • Trailer damping apparatus and trailer utilizing same
    Patent number: 7338063
    Abstract: A damping apparatus for a gooseneck trailer and a gooseneck trailer are provided. The damping apparatus includes an inner shaft and an outer shaft reciprocable about the inner shaft. A first plate is coupled with the outer shaft. A second plate may be coupled with the first plate, and a damping member disposed between the first and second plates to damp relative movement between the inner and outer shafts.
    Type: Grant
    Filed: April 13, 2005
    Date of Patent: March 4, 2008
    Inventor: John D. Graber
  • Door-jamb
    Patent number: D474283
    Type: Grant
    Filed: January 14, 2002
    Date of Patent: May 6, 2003
    Inventor: John D. Graber