Granted Patent
Utility
US 6,508,712 · App. 09/580,422
Recording medium having sequentially accessible data recording regions, data access method, game progress control method, and game machine
Inventor:
Yoshiyuki Miyagawa
Patented Case
View Patent ↗
Granted: Jan 21, 2003
Filed: May 30, 2000
Inventor
Yoshiyuki Miyagawa
Assignee (at issue)
Rolling Square
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.