Granted Patent
Utility
US 6,795,544 · App. 09/708,383
Method for public conversation indication in a telephony exchange
Inventors:
Paul D'Arcy, Michael J. Brosnan, Trevor Fahey
Patented Case
View Patent ↗
Granted: Sep 21, 2004
Filed: Nov 8, 2000
Inventors
Paul D'Arcy
Michael J. Brosnan
Trevor Fahey
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.