An accumulator for a multiple jackpot gaming system wherein the accumulator has the facility for date stamping jackpot-wins, recording the identification of devices and changes being made by such devices to its data and/or programming, allocating coins-in to one or more jackpot groups and/or to one or...http://www.google.ca/patents/US5344144?utm_source=gb-gplus-sharePatent US5344144 - Progressive jackpot gaming system with enhanced accumulator