Patents by Inventor Harry P. Yorgensen, Jr.

Harry P. Yorgensen, Jr. 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: 3969820
    Abstract: A composite dowel pin on which a tooth form may be cast for use in a dental model comprises a body member of synthetic resin tapering to a reduced cross section at one end and a generally cylindrical metal pin extending longitudinally through and outwardly of at least the other end of the body member and securely engaged therewith. The projecting portion of the pin provides a head upon which the tooth form may be cast. Preferably the body member is generally frustoconical in configuration with a planar surface and diametrically opposed rib both extending the length thereof; the pin extends beyond the narrow end and has a notch adjacent its point of exit.
    Type: Grant
    Filed: February 21, 1975
    Date of Patent: July 20, 1976
    Assignee: The J. M. Ney Company
    Inventors: Frank M. Kulig, Robert A. Semrow, Harry P. Yorgensen, Jr.