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Referenced by

Citing PatentFiling dateIssue dateOriginal AssigneeTitle
US40170773 Jul 197512 Apr 1977Bally Manufacturing CorporationMatrix transformation pin ball machine with score multiplier option
US416279327 Mar 197831 Jul 1979Mattel, Inc.Game scoring system
US424457829 Jan 197613 Jan 1981Electronic backgammon
US450834322 Oct 19822 Apr 1985Wico CorporationPinball game with randomly operable drop targets
US501499115 Dec 198914 May 1991SMS Manufacturing Co., Ltd.Amusement game
US57000087 Feb 199723 Dec 1997Williams Electronics Games, Inc.Amusement device integrating games of skill and chance
US580345117 Sep 19968 Sep 1998RLT Acquisition, Inc.Arcade game having multiple score indicators
US66125738 Feb 20012 Sep 2003Electronic game apparatus simulating variable launch power and direction of game object
US819733014 Dec 200712 Jun 2012WMS Gaming Inc.Gaming system having incrementally activated bonus awards
USD32542017 Jan 199014 Apr 1992SMS Manufacturing CorporationGame cabinet