Granted Patent
Utility
US 5,046,848 · App. 07/405,876
Fiber optic detection system using a Sagnac interferometer
Inventor:
Eric Udd
Patented Case
View Patent ↗
Granted: Sep 10, 1991
Filed: Sep 8, 1989
Inventor
Eric Udd
Assignee (at issue)
McDonnell Douglas Corporation
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.