Granted Patent
Utility
US 6,778,721 · App. 10/232,667
WDM switch using OADM and control method thereof
Inventor:
Kyu-Cheol Jeong
Patented Case
View Patent ↗
Granted: Aug 17, 2004
Filed: Sep 3, 2002
Inventor
Kyu-Cheol Jeong
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.