Image card, image engraving device and image engraving method
US8468703B2 · kind B2 · utility
1Cited by
5References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 11, 2012 |
| Grant date | Jun 25, 2013 |
| Priority date | — |
| Expiry date | Oct 11, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24479
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
An image card has an image formed on a card base by engraving striped grooves having different angles according to the degree of shading of the image by the engraving.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.