| http://www.w3.org/ns/prov#value | - UniversalSlot machineUS4763256 *Sep 19, 1986Aug 9, 1988Williams Electronics Games, Inc.System to detect and bypass inoperative game features in an amusement deviceUS4772023 *Mar 16, 1987Sep 20, 1988Kabushiki Kaisha UniversalSlot machineUS4805907 *Mar 8, 1986Feb 21, 1989Sigma Enterprises, IncorporatedSlot machineUS4871171 *Mar 28, 1988Oct 3, 1989Recreativus Franco, S.A.Game device including means
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