| 发明名称 |
Anti counterfeit apparatus |
| 摘要 |
PCT No. PCT/GB95/01036 Sec. 371 Date Nov. 8, 1996 Sec. 102(e) Date Nov. 8, 1996 PCT Filed May 9, 1995 PCT Pub. No. WO95/30972 PCT Pub. Date Nov. 16, 1995Apparatus for distinguishing between genuine and counterfeit articles whereby a first optical filter is applied to genuine articles and suspect articles are scanned with the aid of a suitable second optical filter. Scanning of genuine articles incorporating first optical filter with the aid of suitable second optical filter gives rise to optical effects which would not otherwise be apparent.
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| 申请公布号 |
US5841528(A) |
申请公布日期 |
1998.11.24 |
| 申请号 |
US19960737293 |
申请日期 |
1996.11.08 |
| 申请人 |
THE SECRETARY OF STATE FOR DEFENCE IN HER BRITANNIC MAJESTY'S GOVERNMENT OF THE UNITED KINGDOM OF GREAT BRITAIN AND NORTHERN IRELAND |
发明人 |
LEWIS, KEITH LODER;WELFORD, KEVIN ROY |
| 分类号 |
G01V8/12;G01J3/51;G01V3/00;G01V8/10;G01V15/00;G02B5/28;G06K7/10;G07D7/00;G07D7/12;G07D7/20;G09F3/00;G09F3/02;G09F3/03;G09F19/12;(IPC1-7):G01N21/00 |
主分类号 |
G01V8/12 |
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