Granted Patent
Utility
US 6,795,533 · App. 10/224,063
Intermediate voice and DTMF detector device for improved speech recognition utilization and penetration
Inventors:
Paul Andrew Erb, Dieter Schulz
Patented Case
View Patent ↗
Granted: Sep 21, 2004
Filed: Aug 20, 2002
Inventors
Paul Andrew Erb
Dieter Schulz
Assignee (at issue)
MITEL KNOWLEDGE 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.