Granted Patent
Utility
US 6,650,746 · App. 09/609,295
Urgency of call indication to called party through distinctive notification
Inventors:
Pieter Groen, Robert A. Williamson, Anne Grosman
Patented Case
View Patent ↗
Granted: Nov 18, 2003
Filed: Jun 30, 2000
Inventors
Pieter Groen
Robert A. Williamson
Anne Grosman
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.