Granted Patent
Utility
US 6,704,294 · App. 09/417,047
Establishment of a PSTN and internet multimedia collaboration session
Inventor:
Brian Cruickshank
Patented Case
View Patent ↗
Granted: Mar 9, 2004
Filed: Oct 13, 1999
Inventor
Brian Cruickshank
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.