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发明名称
SECURITY ELEMENT
摘要
The invention relates to an object of value with a security element having at least a first and a second liquid-crystalline material, the first material having thermochromic properties and the second material an optically variable effect.
申请公布号
EP1549501(A2)
申请公布日期
2005.07.06
申请号
EP20030750579
申请日期
2003.09.18
申请人
GIESECKE & DEVRIENT GMBH
发明人
MENGEL, CHRISTOPH;GACESA, DESANKA;VOIT, MAX
分类号
B42D15/10;B42D15/00
主分类号
B42D15/10
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代理人
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