Gem certificate, gem grading report, guarantee, and method of guaranteeing jewelry
US5899503A · kind A · utility
8Cited by
3References
13Claims
0Family size
Inventor
Key dates
| Filing date | Nov 7, 1997 |
| Grant date | May 4, 1999 |
| Priority date | — |
| Expiry date | Nov 7, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB42D15/0033
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A gem certificate comprising identification data based upon the examination of precious stones and precious metals used in jewelry. The gem certificate further has appearance data on the jewelry including at least two or more pictures or figures of the jewelry, and date data including the date of issue of the gem certificate and/or an issuing number.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.