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Object with an optical effect

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

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Optical device

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

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Optical discs, producing methods and production apparatus of...

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

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Optically decodable security document

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

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Optically diffracting security element

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

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Optically variable and machine-readable device for use on securi

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

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Optically-based methods and apparatus for performing...

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

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Optically-readable cards

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

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