Granted Patent
Utility
US 5,742,438 · App. 08/307,223
Projection illumination system
Inventors:
Arlie R. Conner, Jonathan R. Biles, David K. Booth
Patented Case
View Patent ↗
Granted: Apr 21, 1998
Filed: Sep 16, 1994
Inventors
Arlie R. Conner
Jonathan R. Biles
David K. Booth
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.