Patents by Inventor Guenter Franck

Guenter Franck 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).

  • Compact fluorescent lamp
    Patent number: D355496
    Type: Grant
    Filed: October 18, 1993
    Date of Patent: February 14, 1995
    Assignee: Osram GmbH
    Inventor: Guenter Franck
  • Fluorescent lamp
    Patent number: D369869
    Type: Grant
    Filed: December 14, 1994
    Date of Patent: May 14, 1996
    Assignee: Osram GmbH
    Inventor: Guenter Franck
  • Reflector-type fluorescent lamp
    Patent number: D375177
    Type: Grant
    Filed: November 8, 1995
    Date of Patent: October 29, 1996
    Assignee: Osram GmbH
    Inventor: Guenter Franck