Patents by Inventor William W. Hepworth

William W. Hepworth 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).

  • Insert molded instrument marker pen with anchored stylus
    Patent number: 4203682
    Abstract: Insert molded instrument marker pen with a stylus tube firmly secured therein by the provision thereon of an anchoring projection embedded in the insert molded body of the marker. Preferably, the anchoring projection includes a "U-shaped" portion conforming to a section of the outer surface of the tube and outwardly extending flanges at the top of the U-shaped portion, the projection being metal and being welded to a metal stylus tube.
    Type: Grant
    Filed: July 10, 1978
    Date of Patent: May 20, 1980
    Assignee: Graphic Controls Corporation
    Inventor: William W. Hepworth