Patents by Inventor Ronald L. Stephenson

Ronald L. Stephenson 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).

  • Collet-containing mold for undercut molding
    Patent number: 4502659
    Abstract: An injection molding mold including a collet-like mold member for shaping undercut portions of the molded article.
    Type: Grant
    Filed: December 21, 1983
    Date of Patent: March 5, 1985
    Assignee: General Motors Corporation
    Inventors: Ronald L. Stephenson, Arthur G. Beer