Patents by Inventor Donna Dignam

Donna Dignam 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: D403268
    Type: Grant
    Filed: October 20, 1994
    Date of Patent: December 29, 1998
    Inventor: Donna Dignam