Granted Patent
Utility
US 5,365,574 · App. 07/982,186
Telephone network voice recognition and verification using selectively-adjustable signal thresholds
Inventors:
Alan K. Hunt, Thomas Barton Schalk
Patented Case
View Patent ↗
Granted: Nov 15, 1994
Filed: Nov 25, 1992
Inventors
Alan K. Hunt
Thomas Barton Schalk
Assignee (at issue)
VCS Industries, 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.