1
Alfred Thomas, William A Gwiasda: Reel-type slot machine with supplemental payoff. WMS Gaming, Rockey Rifkin and Ryther, September 12, 1995: US05449173 (528 worldwide citation)

According to the present invention, a wildcard symbol is provided at a stop position of one of the reels in a typical reel-type slot machine. In addition to the usual spin and payoff cycle of such a machine, the appearance of the wildcard on the pay line is used to trigger a supplemental pay off und ...


2
Timothy C Loose, William A Gwiasda: Gaming machine coin handling system with dedicated local microcontroller. WMS Gaming, Jenkens Gilchrist, December 7, 2004: US06827647 (5 worldwide citation)

A gaming machine comprises a central processing unit and a local microcontroller. The CPU operates a gaming machine in response to a wager. The local microcontroller is distinct from and coupled to the central processing unit. The local microcontroller performs the low-level coin handling operations ...