JPS631092U - - Google Patents
Info
- Publication number
- JPS631092U JPS631092U JP9446086U JP9446086U JPS631092U JP S631092 U JPS631092 U JP S631092U JP 9446086 U JP9446086 U JP 9446086U JP 9446086 U JP9446086 U JP 9446086U JP S631092 U JPS631092 U JP S631092U
- Authority
- JP
- Japan
- Prior art keywords
- frame
- lid
- ventilation
- manhole
- intrusion
- 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
- 241001465754 Metazoa Species 0.000 claims 1
Landscapes
- Sewage (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9446086U JPS631092U (fr) | 1986-06-20 | 1986-06-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9446086U JPS631092U (fr) | 1986-06-20 | 1986-06-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS631092U true JPS631092U (fr) | 1988-01-06 |
Family
ID=30957946
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9446086U Pending JPS631092U (fr) | 1986-06-20 | 1986-06-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS631092U (fr) |
-
1986
- 1986-06-20 JP JP9446086U patent/JPS631092U/ja active Pending