Granted Patent
Utility
US 6,359,979 · App. 09/223,893
Enhanced call routing in competitive local telephone networks
Inventors:
Weilin Wang, Joyce Bradley
Patented Case
View Patent ↗
Granted: Mar 19, 2002
Filed: Dec 31, 1998
Inventors
Weilin Wang
Joyce Bradley
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.