Patents by Inventor Helga Hagen

Helga Hagen 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).

  • Tightening Device for Blinds
    Publication number: 20080029230
    Abstract: A device for automatic tightening of blinds is disclosed, where the manipulation of the blinds is controlled through the aid of belts running between the outer lists of a window.
    Type: Application
    Filed: January 7, 2005
    Publication date: February 7, 2008
    Inventor: Helga Hagen