Granted Patent
Utility
US 6,243,452 · App. 09/065,117
Graphical call status presentation system
Inventors:
Patrick Michael O'Shaughnessey, Robert Donald Monroe, Jr.
Patented Case
View Patent ↗
Granted: Jun 5, 2001
Filed: Apr 23, 1998
Inventors
Patrick Michael O'Shaughnessey
Robert Donald Monroe, Jr.
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.