Granted Patent
Utility
US 5,796,885 · App. 08/647,172
3.times.3 waveguide coupler for bidirectional dual wavelength transmission and signal sampling and method for making the same
Inventors:
Francois Gonthier, Robert G. Files, Paul Rivett
Patented Case
View Patent ↗
Granted: Aug 18, 1998
Filed: May 9, 1996
Inventors
Francois Gonthier
Robert G. Files
Paul Rivett
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.