Granted Patent
Utility
US 5,943,148 · App. 08/802,483
Surveillance system of a multi-wavelength ring network
Inventors:
Andre Hamel, Valerie Tholey, Jean Stoschek
Patented Case
View Patent ↗
Granted: Aug 24, 1999
Filed: Feb 20, 1997
Inventors
Andre Hamel
Valerie Tholey
Jean Stoschek
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.