Patents by Inventor Robert E. Ernst

Robert E. Ernst 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).

  • Turret punch press tool assembly
    Patent number: 4862782
    Abstract: A punch and die pair for turret punch presses including a punch guide with a punch holder slidable therein having a small replaceable punch insert locked axially and rotationally in the punch holder.
    Type: Grant
    Filed: May 2, 1988
    Date of Patent: September 5, 1989
    Inventor: Robert E. Ernst