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Value document comprising a machine-readable authenticity mark

  • US 20060131425A1
  • Filed: 06/04/2004
  • Published: 06/22/2006
  • Est. Priority Date: 06/12/2003
  • Status: Abandoned Application
First Claim
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1. A value document having a machine-readable authenticity mark, characterized in that the authenticity mark comprises a luminescent marking substance emitting in the infrared spectral range, and a marking substance absorbing in the infrared spectral range.

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