发明名称 |
Method and an apparatus for determining the genuineness of a security blank |
摘要 |
A security blank includes a sheet, and an elongated security thread connected to the sheet. The security thread may be identified upon being irradiated by electromagnetic radiation by a recognizable signature from radiation scattered therefrom; the cross-section of the security thread is other than circular or rectangular and is substantially constant over a prearranged portion of the length thereof.
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申请公布号 |
US4710627(A) |
申请公布日期 |
1987.12.01 |
申请号 |
US19850705741 |
申请日期 |
1985.02.26 |
申请人 |
LGZ LANDIS & GYR ZUG AG |
发明人 |
BALTES, HEINRICH P.;HUISER, ANDRE M. J. |
分类号 |
B41M3/14;B42D15/10;B44F1/12;D21H21/48;G07D7/12;(IPC1-7):G01J1/00 |
主分类号 |
B41M3/14 |
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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