Granted Patent
Utility
US 6,441,933 · App. 09/223,930
Signal monitoring apparatus for wavelength division multiplexed optical telecommunications networks
Inventor:
Jin Jang
Patented Case
View Patent ↗
Granted: Aug 27, 2002
Filed: Dec 31, 1998
Inventor
Jin Jang
Assignee (at issue)
LG ELECTRONICS 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.