Granted Patent
Utility
US 5,307,208 · App. 07/613,771
Optical system for imaging the light from light sources
Inventors:
Engelbert Hofbauer, Ingrid Schehrer, Jakob Bleicher, Siegfried Hetz, Ulrich Matern
Patented Case
View Patent ↗
Granted: Apr 26, 1994
Filed: Nov 19, 1990
Inventors
Engelbert Hofbauer
Ingrid Schehrer
Jakob Bleicher
Siegfried Hetz
Ulrich Matern
Assignee (at issue)
Optische Werke G. Rodenstock
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.