Granted Patent
Utility
US 6,561,656 · App. 10/067,280
Illumination optical system with reflecting light valve
Inventors:
Kuniko Kojima, Shinji Okamori
Patented Case
View Patent ↗
Granted: May 13, 2003
Filed: Feb 7, 2002
Inventors
Kuniko Kojima
Shinji Okamori
Assignee (at issue)
MITSUBISHI ELECTRIC CORPORATION
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.