Patents by Inventor David Northrup

David Northrup 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).

  • Pre-glued display carton with integral display panel
    Patent number: 4860886
    Abstract: A display carton formed from a flat blank to include an integral display panel. The display panel is hingeable from an inoperative position below the removable top panel of the carton into an upright display position during which the deflectable corner portions of the display panel deflect around fixed corner portions of the top panel into overlying positions tending to maintain the display panel in the upright position.
    Type: Grant
    Filed: March 9, 1988
    Date of Patent: August 29, 1989
    Assignee: Gulf States Paper Corporation
    Inventors: David Northrup, Jimmy J. Hanko