Granted Patent
Utility
US 6,768,942 · App. 09/663,893
Navigation system with decryption functions and secure geographic database
Inventor:
Robert Chojnacki
Patented Case
View Patent ↗
Granted: Jul 27, 2004
Filed: Sep 18, 2000
Inventor
Robert Chojnacki
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.