发明名称 |
Security display devices, their production and use |
摘要 |
Security documents often incorporate security devices to prevent or hinder counterfeiters. Disclosed herein are security devices that include a fluid or fluids within the devices. Such devices, and security documents that include them, afford new techniques to check whether a security document is a legitimate or counterfeit copy. |
申请公布号 |
AU2012313318(B2) |
申请公布日期 |
2015.11.26 |
申请号 |
AU20120313318 |
申请日期 |
2012.09.19 |
申请人 |
BANK OF CANADA |
发明人 |
MACPHERSON, CHARLES DOUGLAS;GARANZOTIS, THEODOROS |
分类号 |
B81B1/00;B82Y20/00;G02F1/01;G07D7/12 |
主分类号 |
B81B1/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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