Granted Patent
Utility
US 6,493,349 · App. 09/191,142
Extended internet protocol virtual private network architectures
Inventor:
Liam Casey
Patented Case
View Patent ↗
Granted: Dec 10, 2002
Filed: Nov 13, 1998
Inventor
Liam Casey
Assignee (at issue)
Nortel Networks Limited
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.