Discoloration-resistant timepiece or jewelry part
US7311876B2 · kind B2 · utility
2Cited by
0References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 12, 2004 |
| Grant date | Dec 25, 2007 |
| Priority date | — |
| Expiry date | Aug 12, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG04B37/22
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Timepiece or jewelry part manufactured in an alloy containing at least 75% gold by weight, from 21% to 23% copper by weight, and from 1% to 4% platinum by weight.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.