Granted Patent
Utility
US 6,363,322 · App. 09/470,441
Navigation system with unique audio tones for maneuver notification
Inventor:
Jeffrey Alan Millington
Patented Case
View Patent ↗
Granted: Mar 26, 2002
Filed: Dec 22, 1999
Inventor
Jeffrey Alan Millington
Assignee (at issue)
Magellan Dis, 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.