Granted Patent
Utility
US 5,646,401 · App. 08/577,506
Fiber optic grating and etalon sensor systems
Inventor:
Eric Udd
Patented Case
View Patent ↗
Granted: Jul 8, 1997
Filed: Dec 22, 1995
Inventor
Eric Udd
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.