Granted Patent
Utility
US 4,858,932 · App. 07/184,240
Nonuniform probability reel stop mechanism for gaming machines
Inventor:
Martin A. Keane
Patented Case
View Patent ↗
Granted: Aug 22, 1989
Filed: Apr 21, 1988
Inventor
Martin A. Keane
Assignee (at issue)
Bally Manufacturing Corporation
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.