Granted Patent
Utility
US 6,574,325 · App. 09/350,577
Apparatus method and system for providing call progress information for multiple leg telecommunication sessions for intelligent network services
Inventors:
Robert John Baiyor, Deborah Thomas Earl, Harold Robert Smith, Jr., Thomas Dale Strom
Patented Case
View Patent ↗
Granted: Jun 3, 2003
Filed: Jul 9, 1999
Inventors
Robert John Baiyor
Deborah Thomas Earl
Harold Robert Smith, Jr.
Thomas Dale Strom
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.