Granted Patent
Utility
US 6,334,685 · App. 09/536,177
Segmented light pipe apparatus and method for increasing luminous efficiency of single light-valve, color video projection displays
Inventor:
David E. Slobodin
Patented Case
View Patent ↗
Granted: Jan 1, 2002
Filed: Mar 23, 2000
Inventor
David E. Slobodin
Assignee (at issue)
INFOCUS 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.