Granted Patent
Utility
US 6,558,259 · App. 09/499,639
Game machine with extendible play criteria and information storage medium
Inventors:
Kazuya Maruyama, Isao Nakamura
Patented Case
View Patent ↗
Granted: May 6, 2003
Filed: Feb 8, 2000
Inventors
Kazuya Maruyama
Isao Nakamura
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.