Granted Patent
Utility
US 5,325,237 · App. 07/871,433
Optical device for reversing pupil and image
Inventor:
Stephen F. Sagan
Patented Case
View Patent ↗
Granted: Jun 28, 1994
Filed: Apr 21, 1992
Inventor
Stephen F. Sagan
Assignee (at issue)
Texas Instruments Incorporated
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.