Patents by Inventor Douglas L. Peterson

Douglas L. Peterson 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).

  • Patent number: 5309846
    Abstract: A system is disclosed for creating a temporary grass playing field. The system includes a plurality of substantially identical pallets, each pallet having a base with a top surface and a bottom surface. The pallets are polygonal in shape and are adapted to abut against each other to form the playing field. Reinforcing brackets are secured to the bottom surface of the base to elevate the base above a ground support surface by a distance sufficient to enable the fork of a forklift truck to be inserted under the base and the lift the pallet. Grass sod corresponding in shape to the base is then supported on the top surface of the base. This grass forms the temporary grass playing field when the pallets are nested together so that the sides of the pallets abut against each other.
    Type: Grant
    Filed: December 31, 1992
    Date of Patent: May 10, 1994
    Assignee: 3-Dimensional Services
    Inventor: Douglas L. Peterson