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发明名称
WRIST WATCH HAVING LIGHTTRECEIVING TYPE DISPLAY DEVICE
摘要
PURPOSE:To improve the quality of photoconductor by means of using highpolymer materials for photo conductor of wrist watch having light-receiving type device.
申请公布号
JPS5233770(A)
申请公布日期
1977.03.15
申请号
JP19750109798
申请日期
1975.09.10
申请人
SUWA SEIKOSHA KK
发明人
IGAWA KIYOSHI
分类号
G04G9/00
主分类号
G04G9/00
代理机构
代理人
主权项
地址
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