Granted Patent
Utility
US 6,172,781 · App. 09/040,748
Wave division multiplexed optical network
Inventor:
Christopher Doerr
Patented Case
View Patent ↗
Granted: Jan 9, 2001
Filed: Mar 18, 1998
Inventor
Christopher Doerr
Assignee (at issue)
LUCENT TECHNOLOGIES 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.