Granted Patent
Utility
US 6,580,469 · App. 09/446,881
Projection device
Inventors:
Gerd Rieche, Dietrich Schmidt, Juergen Pudenz, Hans-Juergen Meissner, Hans-Joachim Stoehr, Eberhard Piehler, Rainer Schnell
Patented Case
View Patent ↗
Granted: Jun 17, 2003
Filed: Dec 28, 1999
Inventors
Gerd Rieche
Dietrich Schmidt
Juergen Pudenz
Hans-Juergen Meissner
Hans-Joachim Stoehr
Eberhard Piehler
Rainer Schnell
Assignee (at issue)
Carl Zeiss Jena GmbH
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.