Granted Patent
Utility
US 6,078,863 · App. 08/855,738
Method of preparing route guide information for the driver of a vehicle
Inventors:
Kai Schmischke, Gerald Helmstadter
Patented Case
View Patent ↗
Granted: Jun 20, 2000
Filed: May 9, 1997
Inventors
Kai Schmischke
Gerald Helmstadter
Assignee (at issue)
Mannesmann VDO AG
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.