Method for making a wallet card with an integral magnifying lens
US6176430A · kind A · utility
265Cited by
42References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 24, 1998 |
| Grant date | Jan 23, 2001 |
| Priority date | — |
| Expiry date | Apr 24, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB42D25/20
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A wallet card adapted for use in reading externally stored information includes a transparent, substantially non-foldable semi-rigid base. The semi-rigid base includes a magnifying lens. The lens is formed by heating a lens forming die to a temperature sufficient to soften the base material and then cooling the die prior to withdrawing the die from the base material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.