Granted Patent
Utility
US 6,445,776 · App. 09/223,842
Abstract interface for media and telephony services
Inventors:
Charles K. Shank, R. Alberto Villarica
Patented Case
View Patent ↗
Granted: Sep 3, 2002
Filed: Dec 31, 1998
Inventors
Charles K. Shank
R. Alberto Villarica
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.