Patents by Inventor Erwin D. Campbell

Erwin D. Campbell 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).

  • Portable miter guide device for portable power saws
    Patent number: 4840097
    Abstract: A portable miter guide device for portable power saws which is easily disassembled for transportation and readily used on any table or support on the work site. The device comprises horizontal surfaces for guiding the portable power saw across the work piece at various angles to the side of the lumber or work piece. It also includes a base for supporting the horizontal guides which can readily be supported on the table or the like which includes vertical surfaces for engaging the sides of the work piece.
    Type: Grant
    Filed: August 17, 1987
    Date of Patent: June 20, 1989
    Inventor: Erwin D. Campbell