Granted Patent
Utility
US 5,724,461 · App. 08/627,081
Polarization-insensitive demultiplexer and a method of manufacture
Inventors:
Adrien Bruno, Catherine Ramus
Patented Case
View Patent ↗
Granted: Mar 3, 1998
Filed: Apr 3, 1996
Inventors
Adrien Bruno
Catherine Ramus
Assignee (at issue)
FRANCE TELECOM
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.