| 发明名称 |
SHEET HAVING AT LEAST ONE WATERMARK OR PSEUDO-WATERMARK OBSERVABLE ONLY ON ONE SIDE OF THE SHEET |
| 摘要 |
The invention relates to a sheet having a recto face and a verso face together with at least one watermark or pseudo-watermark and such that at least part of said watermark or pseudo-watermark is observable in transmitted light from only one of the faces of said sheet. |
| 申请公布号 |
EP2198086(A2) |
申请公布日期 |
2010.06.23 |
| 申请号 |
EP20080841944 |
申请日期 |
2008.10.09 |
| 申请人 |
ARJOWIGGINS SECURITY |
发明人 |
RANCIEN, SANDRINE;REMY, ALBAN;CAMUS, MICHEL;DOUBLET, PIERRE;DELOCHE MANUEL |
| 分类号 |
D21H21/48;D21F1/44;D21H27/02;D21H27/30;D21H27/36 |
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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