SECURITY MARK AND METHOD FOR THE PRODUCTION THEREOF
The present invention relates to holography and printing arts. A unit matrix is used with the initial holographic micropattern, at least one projection of said micropattern having cuts and/or faceted pyramid-shaped indentations, e.g., from a diamond indenter. The projections of the initial holograph...
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Format: | Patent |
Sprache: | eng ; rus |
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