Granted Patent
Utility
US 5,465,174 · App. 08/216,773
Single light valve full-color projector display
Inventor:
Donald E. Sprotbery
Patented Case
View Patent ↗
Granted: Nov 7, 1995
Filed: Mar 23, 1994
Inventor
Donald E. Sprotbery
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.