Granted Patent
Utility
US 6,827,451 · App. 10/438,094
Multiple light valve lighting device or apparatus with wide color palette and improved contrast ratio
Inventor:
Richard S. Belliveau
Patented Case
View Patent ↗
Granted: Dec 7, 2004
Filed: May 14, 2003
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.