Patents by Inventor Grant W. Anderson

Grant W. Anderson 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).

  • Apparatus, methods and instruments for removing dental restorations
    Patent number: 4179816
    Abstract: Disclosed methods and apparatus for removing a dental restoration from a tooth provide an aperture in the restoration and establish part of the restoration at the aperture as a shelf facing in the direction of the tooth. A force acting on the shelf relative to and away from the tooth is established at the provided aperture and the restoration is removed from the tooth with the force. In practice, the shelf may be established by undercutting the restoration at the aperture.
    Type: Grant
    Filed: September 21, 1977
    Date of Patent: December 25, 1979
    Inventor: Grant W. Anderson