Granted Patent
Utility
US 6,724,469 · App. 10/387,803
Polarization-OTDR for measuring characteristics of optical fibers
Inventor:
Michel Joseph LeBlanc
Patented Case
View Patent ↗
Granted: Apr 20, 2004
Filed: Mar 14, 2003
Inventor
Michel Joseph LeBlanc
Assignee (at issue)
Exfo Electro-Optical Engineering, Inc.
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.