Patents by Inventor Helmuth Unger

Helmuth Unger 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).

  • Recessed lighting power system module
    Patent number: D339565
    Type: Grant
    Filed: June 13, 1991
    Date of Patent: September 21, 1993
    Assignees: Wila Leuchten GmbH, Poulsen Lighting, Inc.
    Inventors: Howard G. Cohen, Ludwig Gabrecht, Helmuth Unger