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经营范围
发明名称
PHOTOCELL SMOKE SENSOR
摘要
PURPOSE:To eliminate influence of noise light reflected by the inside walls of a chamber by providing a circuit to superimpose voltage impressed upon a light emission element on output of a photocell.
申请公布号
JPS51136471(A)
申请公布日期
1976.11.25
申请号
JP19750059671
申请日期
1975.05.21
申请人
NITSUTAN KK
发明人
KIMURA TETSUO
分类号
G01N21/53;G01N21/77;G08B17/10;G08B17/103
主分类号
G01N21/53
代理机构
代理人
主权项
地址
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