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A method and apparatus for manufacturing a minting die
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A method of making variable diffractive metallic microelements in a laminable plastic body
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A method of manufacturing an electronic identity document
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Anti-counterfeiting tags and related manufacturing method
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Device for reading optical data supports
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Electronic passport
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Optical data carrier having an optical diffractive code, and related reading apparatus
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Self-adhesive safety film for indication of tampering, and relative process for the production thereof
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BR9306506A
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Holograms having a standard reference color
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ITRM910909D0
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Semifinished blank for a coin or medal, having its two surfaces of different material
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CA2023409A1
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Bimetallic coin blank, particularly for coins and the like
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IL66522D0
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Bimetallic composite coin blank for coins,medals and the like
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EP0071691A1
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A device for embossing metal plates and the like, with automatic change of punches
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