Patents by Inventor John C. McKenna

John C. McKenna 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).

  • Orthodontic arch wire
    Patent number: 4892479
    Abstract: An orthodontic arch wire is provided with a mid-point marker in the form of a displacement dimple offset from the principal plane of the wire at its center line. The dimple cooperates with adjacent brackets to restrict sideways displacement of the wire.
    Type: Grant
    Filed: October 11, 1988
    Date of Patent: January 9, 1990
    Inventor: John C. McKenna