Granted Patent
Utility
US 6,252,712 · App. 09/252,636
Optical system with polarization compensator
Inventors:
Gerhard Furter, Winfried Kaiser, Christian Wagner, Michael Gerhard, Karl-Heinz Schuster
Patented Case
View Patent ↗
Granted: Jun 26, 2001
Filed: Feb 19, 1999
Inventors
Gerhard Furter
Winfried Kaiser
Christian Wagner
Michael Gerhard
Karl-Heinz Schuster
Assignee (at issue)
Carl Zeiss Stiftung
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.