Patents by Inventor Elizabeth T. Donan

Elizabeth T. Donan 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).

  • Patent number: D323968
    Type: Grant
    Filed: April 10, 1990
    Date of Patent: February 18, 1992
    Inventors: James S. Blocker, Elizabeth T. Donan