Slot machine with persistent change in symbol function
US7695365B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 10, 2004 |
| Grant date | Apr 13, 2010 |
| Priority date | — |
| Expiry date | Mar 22, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07F17/3265
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A slot machine conducts a wagering game in which a plurality of arrays of symbols are successively displayed. Each array may, for example, result from a free spin of a plurality of symbol-bearing reels during a bonus feature. In each free spin, the reels are rotated and stopped to place the symbols on the reels in visual association with a display area. In response to a random event, at least one symbol may change its function and maintain that function for a plurality of the successive free spins. For example, the symbol may become a wild symbol or a scatter pay symbol. Payouts for the free spins are awarded according to a pay table.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.