Patents by Inventor Siegfried Beier

Siegfried Beier 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).

  • Light chute arrangement
    Patent number: 4009383
    Abstract: A light chute arrangement used in photographic copying apparatus for conveying light from a light source to a negative comprises a first light chute component having an open side and at least one further light chute component, each of said light chute components having reflective inner surfaces. The further light chute component is mounted for movement into and out of the interior of the first light chute component to selectably form from the light chute components light chutes of different respective cross-sections adapted to convey light to negatives of different respective sizes.
    Type: Grant
    Filed: October 22, 1975
    Date of Patent: February 22, 1977
    Assignee: AGFA-Gevaert A.G.
    Inventor: Siegfried Beier