| 发明名称 |
Keyboard having keys with different heights |
| 摘要 |
A keyboard has keys arranged in parallel columns with all of the keys in a respective column projecting from a front plate the same distance. The keys of a first column are arranged to project a smaller distance from the front plate than the keys of an adjacent second column.
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| 申请公布号 |
US5274217(A) |
申请公布日期 |
1993.12.28 |
| 申请号 |
US19910772938 |
申请日期 |
1991.10.08 |
| 申请人 |
FRITZ HARTMANN GERAETEBAU GMBH & CO. KG |
发明人 |
KILIAN, KARL L. |
| 分类号 |
G06F3/02;H01H13/702;H01H13/84;(IPC1-7):H01H13/70;G06C7/02 |
主分类号 |
G06F3/02 |
| 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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