Granted Patent
Utility
US 6,804,331 · App. 10/156,444
Method, apparatus, and computer readable media for minimizing the risk of fraudulent receipt of telephone calls
Inventors:
Jill M. Vacek, Mark J. Pettay, Hendryanto Rilantono, Mahmood S. Akhwand
Patented Case
View Patent ↗
Granted: Oct 12, 2004
Filed: May 28, 2002
Inventors
Jill M. Vacek
Mark J. Pettay
Hendryanto Rilantono
Mahmood S. Akhwand
Assignee (at issue)
WEST CORPORATION
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.