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MULTI-COLOURED CODES

  • US 20110155815A1
  • Filed: 08/26/2009
  • Published: 06/30/2011
  • Est. Priority Date: 09/10/2008
  • Status: Abandoned Application
First Claim
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1. A method of storing information in or on an article, wherein the article comprises a colour former which is selectively irradiated to produce a multi-coloured code comprising at least three different colours.

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