| 发明名称 |
SHEET CONTAINING CONTOUR-DEPENDENT DIRECTIONAL IMAGE AND METHOD FOR FORMING THE SAME |
| 摘要 |
A sheet having a set of axial markings viewable as a contour-dependent, directional image. The image is intact only when the sheet is in substantially a predetermined contour and viewed within a predetermined conical field of view. Also a method for forming such sheets. |
| 申请公布号 |
CA1267173(A) |
申请公布日期 |
1990.03.27 |
| 申请号 |
CA19860516243 |
申请日期 |
1986.08.19 |
| 申请人 |
MINNESOTA MINING AND MANUFACTURING COMPANY |
发明人 |
BRADSHAW, THOMAS I.;ORENSTEEN, BRUCE D.;COOK, JACK E. |
| 分类号 |
B65D53/00;B32B3/26;B32B7/02;B42D15/10;G02B3/00;G02B5/128 |
主分类号 |
B65D53/00 |
| 代理机构 |
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代理人 |
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