Granted Patent
Utility
US 6,401,031 · App. 09/789,325
Travel time obtaining system, local map data server, travel time obtaining server, control methods thereof, and recording medium
Inventor:
Hideharu Ogawa
Patented Case
View Patent ↗
Granted: Jun 4, 2002
Filed: Feb 20, 2001
Inventor
Hideharu Ogawa
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.