Patents by Inventor Robert W. Sjoholm

Robert W. Sjoholm 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).

  • Oscillator apparatus for sorting out pieces of lumber
    Patent number: 6729476
    Abstract: An oscillator apparatus for sorting out pieces of lumber for separating smaller scraps of wood from larger usable pieces of wood. The oscillator apparatus for sorting out pieces of lumber includes a base assembly including leg members and elongate side members interconnecting pairs of leg members; and also includes a table assembly being movably mounted upon the base assembly; and further includes an oscillator assembly being mounted to the base assembly for oscillating the table assembly.
    Type: Grant
    Filed: July 23, 2002
    Date of Patent: May 4, 2004
    Inventor: Robert W. Sjoholm