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Self-verifying security documents

  • US 6,062,604 A
  • Filed: 04/09/1999
  • Issued: 05/16/2000
  • Est. Priority Date: 10/10/1996
  • Status: Expired due to Term
First Claim
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1. A security document, such as a banknote, comprising a single flexible sheet formed from a substrate bearing indicia, said sheet having a first portion of transparent plastics material, and a security device provided at a second portion of the sheet spaced laterally from the transparent first portion, wherein the transparent first portion includes self-verification means to verify or inspect the security device when the sheet is bent, folded or twisted to bring the first and second portions into register with one another.

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