| 发明名称 |
Prevention of electro-chemical corrosion at charging contacts of a battery-powered handpiece and its charger device |
| 摘要 |
The present invention relates to the prevention of electro-chemical corrosion at charging pins, especially of a battery-powered handpiece and its charging station.
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| 申请公布号 |
US7733056(B2) |
申请公布日期 |
2010.06.08 |
| 申请号 |
US20040828656 |
申请日期 |
2004.04.21 |
| 申请人 |
3M INNOVATIVE PROPERTIES COMPANY |
发明人 |
HARTUNG MARTIN G.;KELLER MICHAEL |
| 分类号 |
H02J7/00;A61C19/00;H01M2/10;H01M10/44;H01M10/46 |
主分类号 |
H02J7/00 |
| 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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