Granted Patent
Utility
US 6,069,946 · App. 08/982,684
Telecommunications system for providing a calling party control service
Inventor:
Daniel Francis Lieuwen
Patented Case
View Patent ↗
Granted: May 30, 2000
Filed: Dec 2, 1997
Inventor
Daniel Francis Lieuwen
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.