JPS6120920Y2 - - Google Patents
Info
- Publication number
- JPS6120920Y2 JPS6120920Y2 JP4422080U JP4422080U JPS6120920Y2 JP S6120920 Y2 JPS6120920 Y2 JP S6120920Y2 JP 4422080 U JP4422080 U JP 4422080U JP 4422080 U JP4422080 U JP 4422080U JP S6120920 Y2 JPS6120920 Y2 JP S6120920Y2
- Authority
- JP
- Japan
- Prior art keywords
- lid
- opening
- frame
- base material
- reinforcing
- 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
- 230000003014 reinforcing effect Effects 0.000 claims description 24
- 239000000463 material Substances 0.000 claims description 16
- 230000000903 blocking effect Effects 0.000 claims description 2
- 230000002093 peripheral effect Effects 0.000 claims 1
- 238000000034 method Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
Landscapes
- Floor Finish (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4422080U JPS6120920Y2 (en, 2012) | 1980-03-31 | 1980-03-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4422080U JPS6120920Y2 (en, 2012) | 1980-03-31 | 1980-03-31 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56145552U JPS56145552U (en, 2012) | 1981-11-02 |
| JPS6120920Y2 true JPS6120920Y2 (en, 2012) | 1986-06-23 |
Family
ID=29639488
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4422080U Expired JPS6120920Y2 (en, 2012) | 1980-03-31 | 1980-03-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6120920Y2 (en, 2012) |
-
1980
- 1980-03-31 JP JP4422080U patent/JPS6120920Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56145552U (en, 2012) | 1981-11-02 |