Granted Patent
Utility
US 6,446,002 · App. 09/891,547
Route controlled audio programming
Inventor:
Mark Barton
Patented Case
View Patent ↗
Granted: Sep 3, 2002
Filed: Jun 26, 2001
Inventor
Mark Barton
Assignee (at issue)
Navigation Technologies Corp.
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.