发明名称 PERFORATION PATTERN WITH AN IMAGE THAT DEPENDS ON THE VIEWING ANGLE
摘要 <p>The invention relates to a carrier provided with a perforation pattern arranged by a laser, which perforation pattern provides an image depending on the angle of view, wherein such an effect depending on the angle of view is likewise obtained by applying perforations with a different dimension in a different direction.</p>
申请公布号 WO2003099580(P1) 申请公布日期 2003.12.04
申请号 NL2003000412 申请日期 2003.06.02
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