Patents by Inventor Stefan Borbrink

Stefan Borbrink 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).

  • Cutting tool to perform cutting operations on board material
    Patent number: 5659961
    Abstract: A cutting tool for sheet material such as plasterboard, plywood, plastic, masonite or metal comprising two portions which are aligned and secured by magnetic attraction, such as permanent magnets or electro-magnetic devices. Each portion includes a cutter and device for adjusting the cutting depth. Cutting is accomplished by moving one of the portions, the other portion is simultaneously moved.
    Type: Grant
    Filed: October 14, 1994
    Date of Patent: August 26, 1997
    Assignee: Gyproc Group AB
    Inventor: Stefan Borbrink