Granted Patent
Utility
US 4,976,507 · App. 07/410,856
Sagnac distributed sensor
Inventor:
Eric Udd
Patented Case
View Patent ↗
Granted: Dec 11, 1990
Filed: Sep 22, 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.