Granted Patent
Utility
US 5,449,173 · App. 08/311,863
Reel-type slot machine with supplemental payoff
Inventors:
Alfred Thomas, William A. Gwiasda
Patented Case
View Patent ↗
Granted: Sep 12, 1995
Filed: Sep 26, 1994
Inventors
Alfred Thomas
William A. Gwiasda
Assignee (at issue)
WMS GAMING, 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.