Granted Patent
Utility
US 6,302,794 · App. 09/258,808
Game machine with concentrative prize mode
Inventor:
Masaki Ogawa
Patented Case
View Patent ↗
Granted: Oct 16, 2001
Filed: Feb 26, 1999
Inventor
Masaki Ogawa
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.