Granted Patent
Utility
US 6,490,522 · App. 10/057,925
Route guidance generation apparatus and method
Inventors:
Hiroshi Sugiyama, Miwako Doi
Patented Case
View Patent ↗
Granted: Dec 3, 2002
Filed: Jan 29, 2002
Inventors
Hiroshi Sugiyama
Miwako Doi
Assignee (at issue)
Kabushiki Kaisha Toshiba
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.