Granted Patent
Utility
US 5,014,303 · App. 07/452,567
Operator services using speech processing
Inventor:
George A. Velius
Patented Case
View Patent ↗
Granted: May 7, 1991
Filed: Dec 18, 1989
Inventor
George A. Velius
Assignee (at issue)
Bell Communications Research, 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.