发明名称 Electronic timepiece
摘要 An electronic timepiece having a rotatable operating member such as a crown, with switch and pulse generation means coupled to the operating member whereby a number of pulses can be produced each time the operating member is rotated, these pulses being used to modify time information displayed by the timepiece.
申请公布号 US4257114(A) 申请公布日期 1981.03.17
申请号 US19790010350 申请日期 1979.02.08
申请人 CITIZEN WATCH CO., LTD. 发明人 SEKIYA, FUKUO;MAEKAWA, YUZO
分类号 G04C3/00;G04G5/00;(IPC1-7):G04G5/04 主分类号 G04C3/00
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