Granted Patent
Utility
US 6,434,151 · App. 09/111,906
Communications system and method
Inventors:
Keith Caves, David John Stacey
Patented Case
View Patent ↗
Granted: Aug 13, 2002
Filed: Jul 8, 1998
Inventors
Keith Caves
David John Stacey
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.