Granted Patent
Utility
US 6,064,732 · App. 08/986,286
Screen-based telephone set for interactive enhanced telephony service
Inventors:
William V. Pezzullo, Michel J. Brisebois, Joseph B. Johns, Kenneth M. Orford, Kristin J. Travis, Bruce H. Tsuji, William T. Ross, Andre Robert, Clifford D. Read
Patented Case
View Patent ↗
Granted: May 16, 2000
Filed: Dec 6, 1997
Inventors
William V. Pezzullo
Michel J. Brisebois
Joseph B. Johns
Kenneth M. Orford
Kristin J. Travis
Bruce H. Tsuji
William T. Ross
Andre Robert
Clifford D. Read
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.