Patents by Inventor Joan Hanna-Burns

Joan Hanna-Burns 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).

  • Bed pan seat liner
    Patent number: D261429
    Type: Grant
    Filed: August 31, 1979
    Date of Patent: October 20, 1981
    Inventor: Joan Hanna-Burns