Granted Patent
Utility
US 5,280,909 · App. 07/831,945
Gaming system with progressive jackpot
Inventor:
Daniel A. Tracy
Patented Case
View Patent ↗
Granted: Jan 25, 1994
Filed: Feb 6, 1992
Inventor
Daniel A. Tracy
Assignee (at issue)
Mikohn, Inc.
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.