JPH02114848U - - Google Patents
Info
- Publication number
- JPH02114848U JPH02114848U JP2238189U JP2238189U JPH02114848U JP H02114848 U JPH02114848 U JP H02114848U JP 2238189 U JP2238189 U JP 2238189U JP 2238189 U JP2238189 U JP 2238189U JP H02114848 U JPH02114848 U JP H02114848U
- Authority
- JP
- Japan
- Prior art keywords
- ventilation
- opening
- wall
- closing device
- cylinder
- 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.)
- Granted
Links
- 238000009423 ventilation Methods 0.000 claims description 15
- 230000000630 rising effect Effects 0.000 claims 2
Landscapes
- Ventilation (AREA)
- Building Environments (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2238189U JPH045940Y2 (https=) | 1989-02-28 | 1989-02-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2238189U JPH045940Y2 (https=) | 1989-02-28 | 1989-02-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02114848U true JPH02114848U (https=) | 1990-09-13 |
| JPH045940Y2 JPH045940Y2 (https=) | 1992-02-19 |
Family
ID=31240450
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2238189U Expired JPH045940Y2 (https=) | 1989-02-28 | 1989-02-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH045940Y2 (https=) |
-
1989
- 1989-02-28 JP JP2238189U patent/JPH045940Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH045940Y2 (https=) | 1992-02-19 |