Granted Patent
Utility
US 5,909,273 · App. 08/925,833
Fiber optic interferometric strain gauge assembly using an intensity ratio
Inventor:
Alan Malvern
Patented Case
View Patent ↗
Granted: Jun 1, 1999
Filed: Sep 5, 1997
Inventor
Alan Malvern
Assignee (at issue)
British Aerospace Public Limited Co.
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.