Granted Patent
Utility
US 6,330,224 · App. 09/272,655
System and method for providing enhanced services for a telecommunication call
Inventors:
Joseph Michael Christie, Joseph Christie, Tracy Lee Nelson
Patented Case
View Patent ↗
Granted: Dec 11, 2001
Filed: Mar 18, 1999
Inventors
Joseph Michael Christie
Joseph Christie
Tracy Lee Nelson
Assignee (at issue)
Sprint Telecommunications Company, L.P.
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.