Patents by Inventor Charles E. Duheis

Charles E. Duheis 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).

  • Torque fastening devices and apparatuses
    Patent number: 7299725
    Abstract: Fastening devices and apparatuses for providing an appropriate amount of torque in a fastening system. Particularly, fastening devices and apparatuses configured to inform a user when an appropriate amount of torque as been used when fastening the fastening device to a designated object.
    Type: Grant
    Filed: March 7, 2006
    Date of Patent: November 27, 2007
    Assignee: Diba Industries, Inc.
    Inventors: Gary C. Helstern, John Cronin, Charles E. Duheis