Patents by Inventor Ronald P. Keller

Ronald P. Keller 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).

  • Anterior tooth prosthesis
    Patent number: 4310312
    Abstract: An anterior tooth prosthesis has a one-piece metal framework with laterally extending wings, a central saddle with a concave surface and a peg integral with the surface, and a plastic pontic having a peg-receiving mortise in which the peg is seated and secured.
    Type: Grant
    Filed: June 10, 1980
    Date of Patent: January 12, 1982
    Inventors: Ronald P. Keller, William G. Keller