Granted Patent
Utility
US 6,674,746 · App. 09/359,538
Method and apparatus for voice over internet protocol swapping in a communications system
Inventor:
John X. Lamarque, III
Patented Case
View Patent ↗
Granted: Jan 6, 2004
Filed: Jul 22, 1999
Inventor
John X. Lamarque, III
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.