Granted Patent
Utility
US 5,143,433 · App. 07/786,484
Night vision backlighting system for liquid crystal displays
Inventor:
James F. Farrell
Patented Case
View Patent ↗
Granted: Sep 1, 1992
Filed: Nov 1, 1991
Inventor
James F. Farrell
Assignee (at issue)
Litton Systems Canada Limited
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.