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发明名称
SECURITY ELEMENT COMPRISING METALLIC LAYERS
摘要
The invention relates to a security element for security papers, bank notes, ID cards or the like, with a substrate, on which are disposed at least two metal layers, the metal layers having different optical densities.
申请公布号
EP1503903(A2)
申请公布日期
2005.02.09
申请号
EP20030718785
申请日期
2003.04.23
申请人
GIESECKE & DEVRIENT GMBH
发明人
HEIM, MANFRED;SCHMITZ, CHRISTIAN
分类号
B42D25/00;B42D25/21;G03H1/18
主分类号
B42D25/00
代理机构
代理人
主权项
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