| 发明名称 |
ELECTRONIC TIMEPIELE |
| 摘要 |
PURPOSE:To produce tones of different frequencies thereby to enhance the time informing function by using an electro-acoustic converter which has a resonant point of plural acoustic outputs. |
| 申请公布号 |
JPS53103771(A) |
申请公布日期 |
1978.09.09 |
| 申请号 |
JP19770018416 |
申请日期 |
1977.02.22 |
| 申请人 |
SEIKO INSTR & ELECTRONICS |
发明人 |
MORI SHIGEO;MURAKAMI FUMIKAZU;HARA YOSHIAKI;HORIKOSHI ICHIROU;TAKAHASHI MUNEYA |
| 分类号 |
G10K9/20;G04C21/02;G10K9/12;G10K9/13;G10K9/22 |
主分类号 |
G10K9/20 |
| 代理机构 |
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代理人 |
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| 地址 |
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