Granted Patent
Utility
US 6,690,651 · App. 09/358,994
Method and apparatus for automatic transfer of a call in a communications system in response to changes in quality of service
Inventors:
John X. Lamarque, III, John D. Rutledge
Patented Case
View Patent ↗
Granted: Feb 10, 2004
Filed: Jul 22, 1999
Inventors
John X. Lamarque, III
John D. Rutledge
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.