发明名称 ELECTRONIC WATCH
摘要 PURPOSE:To make possible controlling of other apparatus than watch through the use of the ultrasonic waves being radiated by using an electro-mechanical acoustic transducer which converts coded electric signals to ultrasonic waves.
申请公布号 JPS5370863(A) 申请公布日期 1978.06.23
申请号 JP19760146907 申请日期 1976.12.07
申请人 SEIKO INSTR & ELECTRONICS 发明人 SASAKI MASAYUKI
分类号 G04C13/00;G04C23/10;G04G99/00 主分类号 G04C13/00
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