Granted Patent
Utility
US 6,256,582 · App. 09/297,622
Method and device for navigation support of a vehicle driver
Inventors:
Gerald Helmstadter, Kai Schmischke
Patented Case
View Patent ↗
Granted: Jul 3, 2001
Filed: Aug 2, 1999
Inventors
Gerald Helmstadter
Kai Schmischke
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.