| 发明名称 |
MAGNETIC PROTECTION FOR A TIMEPIECE BALANCE SPRING |
| 摘要 |
The device for protecting a timepiece balance spring (1) from stray magnetic fields includes at least one disc (2) with high magnetic permeability, arranged in a parallel plane to the plane of the balance spring, wherein the disc (2) and the balance spring are mounted coaxially with each other.
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| 申请公布号 |
US2011038234(A1) |
申请公布日期 |
2011.02.17 |
| 申请号 |
US20100857075 |
申请日期 |
2010.08.16 |
| 申请人 |
THE SWATCH GROUP RESEARCH AND DEVELOPMENT LTD. |
发明人 |
MIGNOT JEAN-PIERRE;BORN JEAN-JACQUES |
| 分类号 |
G04B43/00 |
主分类号 |
G04B43/00 |
| 代理机构 |
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代理人 |
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| 主权项 |
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