发明名称 |
Electronic wristwatch with electronic sound emitter device |
摘要 |
An electronic wristwatch with an electronic sound emitter device which provides greatly improved efficiency in the quality and quantity of the sound emitted with a minimum number of elements. The results, in general, are obtained by arranging the elements in such a manner that a suitable signal is presented to the sound emitter driving device upon the coincidence of a preset time and the time given by a time display device.
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申请公布号 |
US3940919(A) |
申请公布日期 |
1976.03.02 |
申请号 |
US19740511309 |
申请日期 |
1974.10.02 |
申请人 |
CITIZEN WATCH CO., LTD. |
发明人 |
YASUDA, TETUYA;YOSHIDA, MAKOTO;MOCHIZUKI, YOSHIFUMI;MOROKAWA, SHIGERU |
分类号 |
G04G13/02;(IPC1-7):G04C21/16;G04C21/00 |
主分类号 |
G04G13/02 |
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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