JPS62122233U - - Google Patents
Info
- Publication number
- JPS62122233U JPS62122233U JP989986U JP989986U JPS62122233U JP S62122233 U JPS62122233 U JP S62122233U JP 989986 U JP989986 U JP 989986U JP 989986 U JP989986 U JP 989986U JP S62122233 U JPS62122233 U JP S62122233U
- Authority
- JP
- Japan
- Prior art keywords
- support shaft
- opening
- lid
- ceiling
- female thread
- 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 4
- 238000010586 diagram Methods 0.000 description 2
- 230000008602 contraction Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
Landscapes
- Building Environments (AREA)
- Ventilation (AREA)
- Air-Flow Control Members (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP989986U JPH0332907Y2 (en:Method) | 1986-01-27 | 1986-01-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP989986U JPH0332907Y2 (en:Method) | 1986-01-27 | 1986-01-27 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62122233U true JPS62122233U (en:Method) | 1987-08-03 |
| JPH0332907Y2 JPH0332907Y2 (en:Method) | 1991-07-12 |
Family
ID=30795651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP989986U Expired JPH0332907Y2 (en:Method) | 1986-01-27 | 1986-01-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0332907Y2 (en:Method) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02130907U (en:Method) * | 1989-04-03 | 1990-10-30 |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7768537B2 (ja) * | 2021-10-20 | 2025-11-12 | 城東テクノ株式会社 | 天井点検口 |
-
1986
- 1986-01-27 JP JP989986U patent/JPH0332907Y2/ja not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02130907U (en:Method) * | 1989-04-03 | 1990-10-30 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0332907Y2 (en:Method) | 1991-07-12 |