Granted Patent
Utility
US 6,053,615 · App. 08/904,393
Image projector with polarization conversion system
Inventors:
Mark Peterson, Jeffrey A. Gohman
Patented Case
View Patent ↗
Granted: Apr 25, 2000
Filed: Aug 1, 1997
Inventors
Mark Peterson
Jeffrey A. Gohman
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.