Granted Patent
Utility
US 4,779,966 · App. 06/684,760
Single mirror projection optical system
Inventor:
Irwin Friedman
Patented Case
View Patent ↗
Granted: Oct 25, 1988
Filed: Dec 21, 1984
Inventor
Irwin Friedman
Assignee (at issue)
PerkinElmer, 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.