Patents by Inventor Dietrich Grabis

Dietrich Grabis 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).

  • Television projection system
    Patent number: 4918535
    Abstract: A TV display, typically derived from a high-intensity miniature cathode ray tube (1) and available on a projection screen (8) thereof is enlarged by an optical lens system and, as enlarged, projected behind a viewing screen (10) via an optical folded system. The specific arrangement of the TV tube (1) and one or more deflection mirrors (3, 4, 5) forming the optical folded system towards the viewing screen (10) permit flat and light-weight construction of the projection system.
    Type: Grant
    Filed: October 25, 1988
    Date of Patent: April 17, 1990
    Assignee: Robert Bosch GmbH
    Inventors: Dietrich Grabis, Peter Knoll