Patents by Inventor Ruth C. Mason

Ruth C. Mason 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).

  • Seat unit for health care walker
    Patent number: D298816
    Type: Grant
    Filed: August 22, 1984
    Date of Patent: December 6, 1988
    Inventors: Elder Burkhart, deceased, by James Burkhart, executor, Ruth C. Mason