Granted Patent
Utility
US 5,881,201 · App. 08/815,172
Backlighting lightpipes for display applications
Inventor:
Garo Khanarian
Patented Case
View Patent ↗
Granted: Mar 9, 1999
Filed: Mar 11, 1997
Inventor
Garo Khanarian
Assignee (at issue)
Hoechst Celanese 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.