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.
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
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