Granted Patent
Utility
US 5,721,795 · App. 08/649,284
High efficiency ejection of light from optical wave guide, by holographically produced light scattering means
Inventor:
David G. Pelka
Patented Case
View Patent ↗
Granted: Feb 24, 1998
Filed: May 17, 1996
Inventor
David G. Pelka
Assignee (at issue)
TIR Technologies, Inc.
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.