<http://webisa.webdatacommons.org/385833853>	<http://www.w3.org/ns/prov#value>	"data acquisition, transmission and analysis system including handheld wireless equipmentUS7218991Nov 22, 2004May 15, 2007Walker Digital, LlcSystem for vending physical and information itemsUS7233912 *Mar 11, 2002Jun 19, 2007Walker Digital, LlcMethod and apparatus for vending a combination of productsUS7258276Oct 16, 2001Aug 21, 2007Promega CorporationRadio frequency identification method and syste" .
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