Granted Patent
Utility
US 6,663,391 · App. 09/642,636
Spotlighted position detection system and simulator
Inventor:
Yasuhiro Otowa
Patented Case
View Patent ↗
Granted: Dec 16, 2003
Filed: Aug 22, 2000
Inventor
Yasuhiro Otowa
Assignee (at issue)
Namco Ltd.
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.