| 发明名称 |
Analog time teaching device |
| 摘要 |
The present invention relates to a device that teaches how to tell time from an analog clock. More particularly, the invention relates to the integration of an analog clock and a digital clock into one single time teaching unit.
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| 申请公布号 |
US6071124(A) |
申请公布日期 |
2000.06.06 |
| 申请号 |
US19980032466 |
申请日期 |
1998.02.26 |
| 申请人 |
HOPE INDUSTRIES, INC. |
发明人 |
ANG, JOSEPH;TONG, GODFRED E. |
| 分类号 |
G09B19/12;(IPC1-7):G09B19/12 |
主分类号 |
G09B19/12 |
| 代理机构 |
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