Patents by Inventor Christopher J Hedger

Christopher J Hedger 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).

  • Sanding machine clamp bar
    Patent number: 6439985
    Abstract: A paper clamp bar for a sanding machine comprises an elongate steel bar having two opposed major faces each defined by a concave helical surface. As a result the clamp bar can be fitted either way up to the drum of a sanding machine.
    Type: Grant
    Filed: March 28, 2001
    Date of Patent: August 27, 2002
    Assignee: Hire Technicians Group, Ltd.
    Inventors: Mark G Rogers, Christopher J Hedger