Patents by Inventor Robert Stefan

Robert Stefan 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).

  • Greenhouse
    Patent number: 6832448
    Abstract: A greenhouse on a support structure on posts with a hanging foil roof that can be opened, wherein the foil covering that forms the roof remains completely below the support structure formed by lattice girders in every position by being suspended form the rails on the underside of, and longitudinally to, the lattice girders is movable between the open and the closed position.
    Type: Grant
    Filed: July 5, 2002
    Date of Patent: December 21, 2004
    Inventor: Robert Stefan
  • Greenhouse
    Publication number: 20040003536
    Abstract: A greenhouse on a support structure on posts with a hanging foil roof that can be opened, wherein the foil covering that forms the roof remains completely below the support structure formed by lattice girders in every position by being suspended form the rails on the underside of, and longitudinally to, the lattice girders is movable between the open and the closed position.
    Type: Application
    Filed: July 5, 2002
    Publication date: January 8, 2004
    Inventor: Robert Stefan