| 发明名称 |
ATTENUATION TYPE SMOKE DETECTOR |
| 摘要 |
PURPOSE:To increase the quantity of light attenuation and improve smoke detection senstivity by providing a light emitting device and a photo detector on one side of prisms, thereby making detection distance longer. |
| 申请公布号 |
JPS5280879(A) |
申请公布日期 |
1977.07.06 |
| 申请号 |
JP19750156096 |
申请日期 |
1975.12.27 |
| 申请人 |
MATSUSHITA ELECTRIC WORKS LTD |
发明人 |
KATAZUKI KUNIHARU;MORISUE KAZUNARI;MATSUMOTO SHIGERU |
| 分类号 |
G01N21/59;G01N21/53 |
主分类号 |
G01N21/59 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
|
| 地址 |
|
