Patents by Inventor Douglas E. Hull

Douglas E. Hull 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).

  • Identity tag reader
    Patent number: D318658
    Type: Grant
    Filed: February 16, 1990
    Date of Patent: July 30, 1991
    Assignee: Avid, Inc.
    Inventors: Hannis L. Stoddard, III, Douglas E. Hull, George Schmidt, Lester Brown, Michael L. Beigel