JPS63159486U - - Google Patents
Info
- Publication number
- JPS63159486U JPS63159486U JP4773787U JP4773787U JPS63159486U JP S63159486 U JPS63159486 U JP S63159486U JP 4773787 U JP4773787 U JP 4773787U JP 4773787 U JP4773787 U JP 4773787U JP S63159486 U JPS63159486 U JP S63159486U
- Authority
- JP
- Japan
- Prior art keywords
- filter
- alarm
- ventilation fan
- replacement
- elapsed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000009423 ventilation Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Electromechanical Clocks (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
- Emergency Alarm Devices (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4773787U JPS63159486U (cs) | 1987-04-01 | 1987-04-01 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4773787U JPS63159486U (cs) | 1987-04-01 | 1987-04-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63159486U true JPS63159486U (cs) | 1988-10-19 |
Family
ID=30868625
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4773787U Pending JPS63159486U (cs) | 1987-04-01 | 1987-04-01 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63159486U (cs) |
-
1987
- 1987-04-01 JP JP4773787U patent/JPS63159486U/ja active Pending
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