JPH0449257Y2 - - Google Patents
Info
- Publication number
- JPH0449257Y2 JPH0449257Y2 JP11338886U JP11338886U JPH0449257Y2 JP H0449257 Y2 JPH0449257 Y2 JP H0449257Y2 JP 11338886 U JP11338886 U JP 11338886U JP 11338886 U JP11338886 U JP 11338886U JP H0449257 Y2 JPH0449257 Y2 JP H0449257Y2
- Authority
- JP
- Japan
- Prior art keywords
- grating
- opening
- sides
- pipe material
- inner edge
- 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.)
- Expired
Links
- 239000000463 material Substances 0.000 claims description 27
- 239000002184 metal Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 235000019994 cava Nutrition 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Landscapes
- Road Paving Structures (AREA)
- Sewage (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11338886U JPH0449257Y2 (enrdf_load_stackoverflow) | 1986-07-25 | 1986-07-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11338886U JPH0449257Y2 (enrdf_load_stackoverflow) | 1986-07-25 | 1986-07-25 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6323348U JPS6323348U (enrdf_load_stackoverflow) | 1988-02-16 |
| JPH0449257Y2 true JPH0449257Y2 (enrdf_load_stackoverflow) | 1992-11-19 |
Family
ID=30995144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11338886U Expired JPH0449257Y2 (enrdf_load_stackoverflow) | 1986-07-25 | 1986-07-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0449257Y2 (enrdf_load_stackoverflow) |
-
1986
- 1986-07-25 JP JP11338886U patent/JPH0449257Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6323348U (enrdf_load_stackoverflow) | 1988-02-16 |
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