Patents by Inventor Edwin L. Hull

Edwin L. 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).

  • Combined exit sign and emergency lamp device
    Patent number: D379373
    Type: Grant
    Filed: August 10, 1995
    Date of Patent: May 20, 1997
    Assignee: National Service Industries, Inc.
    Inventors: Mark C. Logan, David T. Garza, Andrew E. Masters, Edwin L. Hull