Granted Patent
Utility
US 6,553,308 · App. 09/561,023
Vehicle-based navigation system with smart map filtering, portable unit home-base registration and multiple navigation system preferential use
Inventors:
Eugenie V. Uhlmann, Desmond O'Farrell, Kenneth Schofield, Niall R. Lynam
Patented Case
View Patent ↗
Granted: Apr 22, 2003
Filed: Apr 28, 2000
Inventors
Eugenie V. Uhlmann
Desmond O'Farrell
Kenneth Schofield
Niall R. Lynam
Assignee (at issue)
Donnelly 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.