Patents by Inventor Gunnar J. Fonne

Gunnar J. Fonne 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).

  • Double-walled panels with end closure
    Patent number: 4617777
    Abstract: A double-walled panel of transparent synthetic material for use in greenhouses and for similar purposes has opposite open ends closed by flanges. Before closing the ends, internal rib walls are recessed in such a way that transverse connections are formed in the closed double-walled panel through the rib walls, and through which a liquid medium may be distributed to individual channels of the double-walled panel.
    Type: Grant
    Filed: July 3, 1984
    Date of Patent: October 21, 1986
    Assignee: Vefi A/S
    Inventors: Gunnar J. Fonne, Finn Daae-Johansen, Per Thoresen, Stein-Arne Nilsen