Granted Patent
Utility
US 6,507,577 · App. 09/190,082
Voice over internet protocol network architecture
Inventors:
Roy Harold Mauger, Gary Robert Kirkpatrick, Mark Gibson
Patented Case
View Patent ↗
Granted: Jan 14, 2003
Filed: Nov 12, 1998
Inventors
Roy Harold Mauger
Gary Robert Kirkpatrick
Mark Gibson
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.