Granted Patent
Utility
US 6,760,420 · App. 09/907,089
Telephony security system
Inventors:
Craig Heilmann, Mark Collier, Doug Conyers, Keith S. Pickens, David Buntin, Greg Schmid, Stephen Faustino, Todd Beebe, Michael Brysch, Robert R. Applonie
Patented Case
View Patent ↗
Granted: Jul 6, 2004
Filed: Jul 17, 2001
Inventors
Craig Heilmann
Mark Collier
Doug Conyers
Keith S. Pickens
David Buntin
Greg Schmid
Stephen Faustino
Todd Beebe
Michael Brysch
Robert R. Applonie
Assignee (at issue)
SecureLogix 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.