Patents by Inventor Robert N. Hanna

Robert N. Hanna 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).

  • Robotic cutter
    Patent number: 5368423
    Abstract: An improved robotic cutter for re-establishing lateral connections in a lined sewer pipe is disclosed and claimed herein. The improved robotic cutter disclosed herein is a relatively small, lightweight cutter in which the cutting tool can be made to scribe a true circle, thus ensuring a true circular cutout of the lining blocking a lateral connection.
    Type: Grant
    Filed: February 3, 1994
    Date of Patent: November 29, 1994
    Assignee: Inliner U.S.A., Inc.
    Inventor: Robert N. Hanna