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Patent AT-E400447-T1: [Translated] OPTICALLY VARIABLE ELEMENT WITH ELECTRICALLY ACTIVE LAYER

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data.gov2025-12-20 收录
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https://catalog.data.gov/dataset/patent-at-e400447-t1-translated-optically-variable-element-with-electrically-active-layer
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There is described a security element having at least one optically variable device, in which at least one layer of the optically variable device is in the form of an...
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