ALEXANDRIA, Va., March 12 -- United States Patent no. 12,249,216, issued on March 11, was assigned to Aristocrat Technologies Australia Pty Ltd. (North Ryde, Australia).

"Systems and methods for supplementing a wagering game" was invented by Allon Englman (Las Vegas), Gary Penacho (Henderson, Nev.) and Brian Johnson (Las Vegas).

According to the abstract* released by the U.S. Patent & Trademark Office: "An electronic gaming machine includes a display device and a game controller configured to initiate a feature game that uses a plurality of mechanical reels and the display device, identify a number of feature game symbols initially available for use during the feature game, display a plurality of symbol columns, each symbol column of the ...