Patents by Inventor Donald F. Buckingham

Donald F. Buckingham 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).

  • Vacuum printing apparatus
    Patent number: 4585340
    Abstract: Vacuum printing apparatus is provided including a light box having an upwardly facing ground glass illuminated surface. A manually movable vacuum box is movable independently of the light box and is operated face down with a vacuum chamber above the photosensitive printing material and a transparency, the vacuum box resting on the light box for exposure.
    Type: Grant
    Filed: November 14, 1983
    Date of Patent: April 29, 1986
    Assignee: Buckingham Graphics, Inc.
    Inventor: Donald F. Buckingham