Patents by Inventor Lothar Friebolin

Lothar Friebolin 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: 6419376
    Abstract: An illuminated indication device for road traffic. A number of indicating points are formed with indicating lenses in or on an indicating surface. The indicating lenses have a light entry surface and a light exit surface and are illuminated by the rear face of the indicating surface, which has individually allocated light-emitting elements with a small diameter. One object of this invention is to make the indication device easier to read. The light entry surface and/or the light exit surface is shaped in such a way that the distribution of light intensity on the indicator surface extends further in a horizontal direction than in a vertical direction.
    Type: Grant
    Filed: January 30, 2001
    Date of Patent: July 16, 2002
    Assignee: Dambach-Werke GmbH
    Inventor: Lothar Friebolin