Granted Patent
Utility
US 6,325,720 · App. 09/190,134
Game machine
Inventors:
Nakayasu Tsukahara, Mitsuaki Kusanagi, Takeo Koyama
Patented Case
View Patent ↗
Granted: Dec 4, 2001
Filed: Nov 12, 1998
Inventors
Nakayasu Tsukahara
Mitsuaki Kusanagi
Takeo Koyama
Assignee (at issue)
Aruze Corp.
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.