Granted Patent
Utility
US 6,836,727 · App. 10/234,757
Information processing system providing a service using electronic map information
Inventor:
Hisayuki Kunigita
Patented Case
View Patent ↗
Granted: Dec 28, 2004
Filed: Sep 4, 2002
Inventor
Hisayuki Kunigita
Assignee (at issue)
SONY COMPUTER ENTERTAINMENT INC.
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.