| 发明名称 |
Exterior cover part for a watch, and method for manufacturing the same. |
| 摘要 |
<p>Outer cladding part for a watch made of purely ferritic steel, whose nominal composition satisfies the following requirements: chromium equivalent of between 17.5% and 22%; and nickel equivalent lower than 2%, and chromium concentration lower than or equal to 18.5%.</p> |
| 申请公布号 |
EP0379061(A1) |
申请公布日期 |
1990.07.25 |
| 申请号 |
EP19900100499 |
申请日期 |
1990.01.11 |
| 申请人 |
ETA S.A. FABRIQUES D'EBAUCHES |
发明人 |
LOTH, ERIC;WALDER, PIERRE-ALAIN |
| 分类号 |
C22C38/00;C22C38/22;C22C38/50;G04B37/22;G04B43/00 |
主分类号 |
C22C38/00 |
| 代理机构 |
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代理人 |
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| 主权项 |
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| 地址 |
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