Granted Patent
Utility
US 6,704,419 · App. 09/316,941
Information providing system
Inventor:
Noriyasu Sakajiri
Patented Case
View Patent ↗
Granted: Mar 9, 2004
Filed: May 21, 1999
Inventor
Noriyasu Sakajiri
Assignee (at issue)
NEC 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.