Granted Patent
Utility
US 6,564,181 · App. 09/840,721
Method and system for measurement of speech distortion from samples of telephonic voice signals
Inventor:
William Christopher Hardy
Patented Case
View Patent ↗
Granted: May 13, 2003
Filed: Apr 24, 2001
Inventor
William Christopher Hardy
Assignee (at issue)
Worlds.com, 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.