发明名称 |
DOCUMENT DE SECURITE ET PROCEDE DE FABRICATION D'UN TEL DOCUMENT |
摘要 |
Disclosed is a protected document such as a negotiable instrument, a title instrument, indentification document or other documents which should be kept secure from illegal copying by color copiers. The method of making the document comprising preprinting a "VOID" or other warning or cancellation phrase pattern in half tone or multitone on the document and camouflaging this pattern is also disclosed. |
申请公布号 |
BE862624(A1) |
申请公布日期 |
1978.05.02 |
申请号 |
BE19780184090 |
申请日期 |
1978.01.04 |
申请人 |
BURROUGHS CORP. |
发明人 |
W.H. MOWRY JR.;M.J. MC ELLIGOTT;V.J. TKALENKO JR.;J. BARAN |
分类号 |
G06K19/10;B41M3/14;B42D15/10;B44F1/12;G03C5/08;G03G15/01;G03G21/00;G03G21/04;G07D7/20 |
主分类号 |
G06K19/10 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|