| 发明名称 |
LIGHT SCATTERING TYPE SMOKE DETECTOR |
| 摘要 |
PURPOSE:Housing for light scattering type smoke detectors is made to a cylindrical shape with both ends being closed and wave-form ventilation holes are formed in surrounding walls to allow smooth entry of smoke in the housing and prohibit entry of external therein. |
| 申请公布号 |
JPS5229274(A) |
申请公布日期 |
1977.03.04 |
| 申请号 |
JP19750105361 |
申请日期 |
1975.08.29 |
| 申请人 |
MATSUSHITA ELECTRIC WORKS LTD |
发明人 |
ARAKI TSUNEHIKO;OKUDA YOSHIHIKO |
| 分类号 |
G01N21/53;G08B17/10;G08B17/107 |
主分类号 |
G01N21/53 |
| 代理机构 |
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代理人 |
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| 主权项 |
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| 地址 |
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