JPS63141243U - - Google Patents
Info
- Publication number
- JPS63141243U JPS63141243U JP3228187U JP3228187U JPS63141243U JP S63141243 U JPS63141243 U JP S63141243U JP 3228187 U JP3228187 U JP 3228187U JP 3228187 U JP3228187 U JP 3228187U JP S63141243 U JPS63141243 U JP S63141243U
- Authority
- JP
- Japan
- Prior art keywords
- stopper
- pin
- manhole cover
- vertical
- lever
- 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 2
- 230000000903 blocking effect Effects 0.000 description 1
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3228187U JPS63141243U (enExample) | 1987-03-05 | 1987-03-05 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3228187U JPS63141243U (enExample) | 1987-03-05 | 1987-03-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63141243U true JPS63141243U (enExample) | 1988-09-16 |
Family
ID=30838812
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3228187U Pending JPS63141243U (enExample) | 1987-03-05 | 1987-03-05 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63141243U (enExample) |
-
1987
- 1987-03-05 JP JP3228187U patent/JPS63141243U/ja active Pending
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