Granted Patent
Utility
US 6,561,653 · App. 10/046,440
Multiple light valve lighting device or apparatus with wide color palette and improved contrast ratio
Inventor:
Richard S. Belliveau
Patented Case
View Patent ↗
Granted: May 13, 2003
Filed: Jan 16, 2002
Inventor
Richard S. Belliveau
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.