Granted Patent
Utility
US 6,324,280 · App. 09/072,809
Optimum routing of calls over the public switched telephone network and the internet
Inventors:
James Patrick Dunn, Jack Kozik
Patented Case
View Patent ↗
Granted: Nov 27, 2001
Filed: May 5, 1998
Inventors
James Patrick Dunn
Jack Kozik
Assignee (at issue)
LUCENT TECHNOLOGIES INC.
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.