Patents by Inventor Frede O. Hansen

Frede O. Hansen 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).

  • Wood joint cutter and method therefor
    Patent number: 4505086
    Abstract: A rotary cutting tool with at least a first set and a second set of teeth attached to a power router for cutting a joint component consisting of at least two tongues and at least two grooves alternating with the tongues in the end, edge or at the side of a piece of construction material. The distance between the two sets of teeth is equal to the width of the second set of teeth. The depths of the grooves are governed by a spacer positioned between the first and second sets of teeth.
    Type: Grant
    Filed: December 6, 1983
    Date of Patent: March 19, 1985
    Inventor: Frede O. Hansen