06234897 is referenced by 624 patents and cites 93 patents.

A slot machine comprises a spinning reel display and a bonus game. The spinning reel display shows a plurality of symbols on each of a plurality of rotatable reels. The reels are rotated and stopped to place the symbols of each reel in visual association with a pay line. The pay line is associated with at least one of the symbols on each of the reels. The bonus game is triggered in response to start-bonus symbols from the respective stopped reels appearing in the spinning reel display. The bonus game having different expected values based on different arrangements of the start-bonus symbols in the spinning reel display.

Title
Gaming device with variable bonus payout feature
Application Number
9/382922
Publication Number
6234897 (B1)
Application Date
August 25, 1999
Publication Date
May 22, 2001
Inventor
Alfred Thomas
Las Vegas
NV, US
Robert J Wilson Jr
Buffalo Grove
IL, US
Lawrence E DeMar
Winnetka
IL, US
Erica A Frohm
Evanston
IL, US
Agent
Jenkens & Gilchrist
US
Assignee
WMS Gaming
IL, US
IPC
A63F 9/00
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