Watch case
US4637734A · kind A · utility
6Cited by
1References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 8, 1985 |
| Grant date | Jan 20, 1987 |
| Priority date | — |
| Expiry date | Jul 8, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG04B39/02
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A case for a wrist watch includes a crystal, in particular, formed from a mineral material in the shape of a spherical cap which extends over the entire upper surface of the caseband and the edge of which descends to a level below that of the dial.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.