Granted Patent
Utility
US 6,697,342 · App. 09/411,284
Conference circuit for encoded digital audio
Inventors:
Joseph Smyth, David O'Connell
Patented Case
View Patent ↗
Granted: Feb 24, 2004
Filed: Oct 4, 1999
Inventors
Joseph Smyth
David O'Connell
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.