发明名称 |
A method for the manufacture of a material in the form of sheets or a web provided with a watermarklike pattern. |
摘要 |
<p>A material (1) in the form of sheets or a web is provided with a watermarklike pattern (12) in the form of a text, figure or similar identification mark visible or displayable in transmitted light by means of relieflike mechanical working off of material, for example grinding, milling etc., corresponding to the desired pattern (12).</p> |
申请公布号 |
EP0195887(A2) |
申请公布日期 |
1986.10.01 |
申请号 |
EP19860100550 |
申请日期 |
1986.01.17 |
申请人 |
TETRA ALFA HOLDINGS S.A. |
发明人 |
RAUSING, HANS;NILSSON, INGVAR |
分类号 |
B24B19/22;B26F3/02;B44B5/00;B44C1/22;B44C1/24;B65H35/10 |
主分类号 |
B24B19/22 |
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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