| http://www.w3.org/ns/prov#value | - When the article is a cell phone, the receiver may attach to a person's belt...http://www.google.com/patents/US7535357?utm_source=gb-gplus-sharePatent US7535357 - Proximity alarm system for articlesAdvanced Patent SearchPublication numberUS7535357 B2Publication typeGrantApplication numberUS 11/554,200Publication dateMay 19, 2009Filing dateOct 30, 2006Priority dateOct 31, 2005Fee statusLapsedAlso p
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