Granted Patent
Utility
US 6,353,663 · App. 09/454,838
Method and apparatus for screening telephone calls
Inventors:
Gilman R. Stevens, Babu Mani
Patented Case
View Patent ↗
Granted: Mar 5, 2002
Filed: Dec 6, 1999
Inventors
Gilman R. Stevens
Babu Mani
Assignee (at issue)
Alcatel USA Sourcing, 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.