05373440 is referenced by 292 patents and cites 30 patents.

A patron inserts a coded game card into a game machine which reads the code and determines whether the game card has been played within a designated time period. If the game card has been played within such period, the game machine is not permitted to operate and a message will be generated. If the card has not been played within the time period, the game machine operates and randomly positions a number of product and/or service representations with respect to one another. Prescribed combinations of the representations permit the patron to win a prize. Symbols, which may include symbols representing a business identity, may optionally be employed as wild cards in forming the prescribed combinations. In addition to bearing a unique game card code, the game card can also contain establishment codes which permit a game card to be played only at particular establishments. Other game cards can be specially coded to provide maintenance instructions to the game machine.

Title
Promotional game method and apparatus therefor
Application Number
821988
Publication Number
5373440
Application Date
June 4, 1992
Publication Date
December 13, 1994
Inventor
Robert T Grindell
Sunrise
FL, US
Charles I Bernhaut
North Brunswick
NJ, US
Leopold Cohen
Las Vegas
NV, US
Agent
Lerner David Littenberg Krumholz & Mentlik
Assignee
UC NWIN Systems
FL, US
IPC
A63F 5/04
G06F 15/28
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