| http://www.w3.org/ns/prov#value | - me monitoring apparatusUS4814589 *Apr 18, 1986Mar 21, 1989Leonard StorchInformation transfer and use, particularly with respect to objects such as gambling chipsUS4899392Dec 3, 1987Feb 6, 1990Cing CorporationMethod and system for objectively grading and identifying coinsUS5103081May 23, 1990Apr 7, 1992Games Of NevadaApparatus and method for reading data encoded on circular objects, such as gaming
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