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Data carrier having an optically variable element and methods fo

Optical: systems and elements – Holographic system or element – Authentication
Patent

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Data carrier having an optically variable element and...

Optical: systems and elements – Holographic system or element – Authentication
Reexamination Certificate

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Data carrier having an optically variable element and...

Optical: systems and elements – Holographic system or element – Authentication
Reexamination Certificate

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Data carrier with an optically variable element

Optical: systems and elements – Holographic system or element – Authentication
Patent

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Device with anti-counterfeiting diffractive structure

Optical: systems and elements – Holographic system or element – Authentication
Reexamination Certificate

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Diffractive safety element

Optical: systems and elements – Holographic system or element – Authentication
Reexamination Certificate

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Diffractive security device on compact discs

Optical: systems and elements – Holographic system or element – Authentication
Reexamination Certificate

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Dot matrix hologram for hiding a moire pattern

Optical: systems and elements – Holographic system or element – Authentication
Reexamination Certificate

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Double hologram

Optical: systems and elements – Holographic system or element – Authentication
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