JPS6269744U - - Google Patents
Info
- Publication number
- JPS6269744U JPS6269744U JP16128785U JP16128785U JPS6269744U JP S6269744 U JPS6269744 U JP S6269744U JP 16128785 U JP16128785 U JP 16128785U JP 16128785 U JP16128785 U JP 16128785U JP S6269744 U JPS6269744 U JP S6269744U
- Authority
- JP
- Japan
- Prior art keywords
- tunnel
- side wall
- maintenance area
- wall
- ceiling
- 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
- 238000012423 maintenance Methods 0.000 claims description 4
- 230000001143 conditioned effect Effects 0.000 claims description 2
Landscapes
- Ventilation (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16128785U JPH0230660Y2 (fr) | 1985-10-23 | 1985-10-23 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16128785U JPH0230660Y2 (fr) | 1985-10-23 | 1985-10-23 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6269744U true JPS6269744U (fr) | 1987-05-01 |
| JPH0230660Y2 JPH0230660Y2 (fr) | 1990-08-17 |
Family
ID=31087461
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16128785U Expired JPH0230660Y2 (fr) | 1985-10-23 | 1985-10-23 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0230660Y2 (fr) |
-
1985
- 1985-10-23 JP JP16128785U patent/JPH0230660Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0230660Y2 (fr) | 1990-08-17 |