Granted Patent
Utility
US 6,142,652 · App. 09/097,854
Color filter module for projected light
Inventor:
Brian Edward Richardson
Patented Case
View Patent ↗
Granted: Nov 7, 2000
Filed: Jun 15, 1998
Inventor
Brian Edward Richardson
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.