| 发明名称 |
ELECTRONIC WRISTWATCH WITH TIME ALARM SOUND GENERATOR |
| 摘要 |
PURPOSE:To make possible knowing of time change through hearing of sound by converting the electrical signal from an oscillator to the signal of a low frequency with frequency dividing circuits and causing sound to be produced by this signal. |
| 申请公布号 |
JPS539164(A) |
申请公布日期 |
1978.01.27 |
| 申请号 |
JP19760083287 |
申请日期 |
1976.07.13 |
| 申请人 |
SUWA SEIKOSHA KK |
发明人 |
MAEDA YOSHIHIRO |
| 分类号 |
G04G13/02;G04G13/00;G04G99/00 |
主分类号 |
G04G13/02 |
| 代理机构 |
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代理人 |
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