Patents by Inventor J. Dawson Ruby

J. Dawson Ruby 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).

  • Dental chair
    Patent number: D250921
    Type: Grant
    Filed: March 17, 1977
    Date of Patent: January 30, 1979
    Inventor: J. Dawson Ruby