JPH0332623Y2 - - Google Patents
Info
- Publication number
- JPH0332623Y2 JPH0332623Y2 JP2449285U JP2449285U JPH0332623Y2 JP H0332623 Y2 JPH0332623 Y2 JP H0332623Y2 JP 2449285 U JP2449285 U JP 2449285U JP 2449285 U JP2449285 U JP 2449285U JP H0332623 Y2 JPH0332623 Y2 JP H0332623Y2
- Authority
- JP
- Japan
- Prior art keywords
- cylindrical sheet
- pipe
- main body
- sheet
- covering
- 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
- 238000000034 method Methods 0.000 claims description 7
- 239000010865 sewage Substances 0.000 description 4
- 239000003673 groundwater Substances 0.000 description 2
- 238000012790 confirmation Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2449285U JPH0332623Y2 (US07122547-20061017-C00224.png) | 1985-02-22 | 1985-02-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2449285U JPH0332623Y2 (US07122547-20061017-C00224.png) | 1985-02-22 | 1985-02-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61141399U JPS61141399U (US07122547-20061017-C00224.png) | 1986-09-01 |
| JPH0332623Y2 true JPH0332623Y2 (US07122547-20061017-C00224.png) | 1991-07-10 |
Family
ID=30518689
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2449285U Expired JPH0332623Y2 (US07122547-20061017-C00224.png) | 1985-02-22 | 1985-02-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0332623Y2 (US07122547-20061017-C00224.png) |
-
1985
- 1985-02-22 JP JP2449285U patent/JPH0332623Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61141399U (US07122547-20061017-C00224.png) | 1986-09-01 |
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