Granted Patent
Utility
US 6,640,187 · App. 10/133,823
Method for obtaining information for a geographic database
Inventors:
William W. Chenault, Lawrence M. Kaplan
Patented Case
View Patent ↗
Granted: Oct 28, 2003
Filed: Apr 26, 2002
Inventors
William W. Chenault
Lawrence M. Kaplan
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.