发明名称 Difficult to forge cheques
摘要 The cheque is printed on paper with no watermark suitable for electronic scrutiniser, and having coded lines for machine evaluation. In one or two places where there is no printing certain characteristics marks are made with a colourless dried liquid which penetrates the paper and when exposed to the light becomes transparent. Vegetable oil with drying agent is used for this purpose.
申请公布号 DE1802418(A1) 申请公布日期 1970.06.18
申请号 DE19681802418 申请日期 1968.10.10
申请人 KUHN,FRANZ 发明人 KUHN,FRANZ
分类号 B41M3/10;B42D15/00;B42D25/29 主分类号 B41M3/10
代理机构 代理人
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