Patents by Inventor Ray Barr

Ray Barr 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: D252240
    Type: Grant
    Filed: August 30, 1977
    Date of Patent: July 3, 1979
    Inventors: Ray Barr, Roxye Hamilton