发明名称 |
Improvements in substrates |
摘要 |
A fibrous security substrate for use in producing documents includes at least one aperture extending therethrough and contains an elongate impermeable element at least partially embedded therein such that at least one edge thereof is exposed in the aperture. |
申请公布号 |
GB2390056(B) |
申请公布日期 |
2005.08.31 |
申请号 |
GB20020014645 |
申请日期 |
2002.06.25 |
申请人 |
DE LA * RUE INTERNATIONAL LIMITED |
发明人 |
STEVEN JOHN * HARD |
分类号 |
D21H21/48 |
主分类号 |
D21H21/48 |
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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