Title:
SMOKE DETECTOR
Document Type and Number:
Japanese Patent JPS5237084
Kind Code:
A
Abstract:
PURPOSE: Receiver outputs are fed back, memorized, compared and indentified by flashing a switch upon lapse of time, whereby correct alarm is given despite decrease in the quantity of transmission light owing to deterioration, etc. of the device.
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| JPH08128898 | LIQUID COLORIMETER |
Inventors:
NAKAUCHI SHIYUNSAKU
TAKAHASHI AKIFUSA
TAKAHASHI AKIFUSA
Application Number:
JP11256175A
Publication Date:
March 22, 1977
Filing Date:
September 19, 1975
Export Citation:
Assignee:
KOKUSAI GIJUTSU KAIHATSU KK
International Classes:
G01N21/59; G01N21/27; G08B17/10; G08B17/103; (IPC1-7): G01N21/12; G08B17/10
Domestic Patent References:
| JPS4923685A | 1974-03-02 | |||
| JPS4958884A | 1974-06-07 |