Granted Patent
Utility
US 5,548,422 · App. 08/084,874
Notch filters with cholesteric polarizers with birefringent film and linear polarizer
Inventors:
Arlie R. Conner, Jonathan R. Biles, Terry J. Scheffer, Gary B. Kingsley
Patented Case
View Patent ↗
Granted: Aug 20, 1996
Filed: Jun 28, 1993
Inventors
Arlie R. Conner
Jonathan R. Biles
Terry J. Scheffer
Gary B. Kingsley
Assignee (at issue)
InFocus Systems, Inc.
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.