Granted Patent
Utility
US 5,221,990 · App. 07/848,592
Wide field of view automotive rear vision optical system
Inventor:
Lacy G. Cook
Patented Case
View Patent ↗
Granted: Jun 22, 1993
Filed: Mar 9, 1992
Inventor
Lacy G. Cook
Assignee (at issue)
Hughes Aircraft Company
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.