Granted Patent
Utility
US 4,864,137 · App. 07/166,765
Optical sensing system
Inventor:
James E. Klein
Patented Case
View Patent ↗
Granted: Sep 5, 1989
Filed: Mar 3, 1988
Inventor
James E. Klein
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.