| 发明名称 |
WATCH WITH CALENDAR |
| 摘要 |
PURPOSE:To provide a watch with correction-free perpetual calendar throughout the year and constitute the same with as simple electronic circuits as possible by using a quad counter for a means of making February to 29 days once every four years. |
| 申请公布号 |
JPS5371866(A) |
申请公布日期 |
1978.06.26 |
| 申请号 |
JP19760147334 |
申请日期 |
1976.12.08 |
| 申请人 |
SEIKO INSTR & ELECTRONICS |
发明人 |
KOIKE YUUJI |
| 分类号 |
G04G9/00;G04G3/00;G09D3/12;G09F9/30;G09G3/04 |
主分类号 |
G04G9/00 |
| 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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