Granted Patent
Utility
US 6,704,649 · App. 10/202,064
Satellite navigation system of which map data are partially updateable
Inventor:
Hiroshi Miyahara
Patented Case
View Patent ↗
Granted: Mar 9, 2004
Filed: Jul 25, 2002
Inventor
Hiroshi Miyahara
Assignees (at issue)
PIONEER CORPORATION
INCREMENT P CORPORATION
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.