4. Printed matter
  5. Having revealable concealed information, fraud preventer or...
  6. Utilizing electromagnetic radiation

James L. Karney

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Countermeasure system for laser radiation

Radiant energy – Invisible radiant energy responsive electric signalling – Infrared responsive
Patent

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Symbol reader

Registers – Coded record sensors – Feed mechanisms
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Volumetric holographic photocopy prevention film

Printed matter – Having revealable concealed information – fraud preventer or... – Utilizing electromagnetic radiation
Patent

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Profile ID: LFUS-PAI-P-658166

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