JPH02148071U - - Google Patents
Info
- Publication number
- JPH02148071U JPH02148071U JP5578989U JP5578989U JPH02148071U JP H02148071 U JPH02148071 U JP H02148071U JP 5578989 U JP5578989 U JP 5578989U JP 5578989 U JP5578989 U JP 5578989U JP H02148071 U JPH02148071 U JP H02148071U
- Authority
- JP
- Japan
- Prior art keywords
- lid
- pressure
- pipe
- internal pressure
- outside
- 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 6
- 230000002265 prevention Effects 0.000 claims 4
- 239000010865 sewage Substances 0.000 claims 3
- 230000000903 blocking effect Effects 0.000 claims 1
- 238000011144 upstream manufacturing Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 6
Landscapes
- Sink And Installation For Waste Water (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5578989U JPH02148071U (en]) | 1989-05-17 | 1989-05-17 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5578989U JPH02148071U (en]) | 1989-05-17 | 1989-05-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02148071U true JPH02148071U (en]) | 1990-12-17 |
Family
ID=31579053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5578989U Pending JPH02148071U (en]) | 1989-05-17 | 1989-05-17 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02148071U (en]) |
-
1989
- 1989-05-17 JP JP5578989U patent/JPH02148071U/ja active Pending
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