Granted Patent
Utility
US 6,493,428 · App. 09/136,210
Text-enhanced voice menu system
Inventor:
Curt Hillier
Patented Case
View Patent ↗
Granted: Dec 10, 2002
Filed: Aug 18, 1998
Inventor
Curt Hillier
Assignee (at issue)
Siemens Information and Communication Networks, 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.