JPH01119490U - - Google Patents
Info
- Publication number
- JPH01119490U JPH01119490U JP1229788U JP1229788U JPH01119490U JP H01119490 U JPH01119490 U JP H01119490U JP 1229788 U JP1229788 U JP 1229788U JP 1229788 U JP1229788 U JP 1229788U JP H01119490 U JPH01119490 U JP H01119490U
- Authority
- JP
- Japan
- Prior art keywords
- outer tube
- tube
- pipe
- inner tube
- propulsion
- 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
- 238000000034 method Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1229788U JPH01119490U (th) | 1988-02-01 | 1988-02-01 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1229788U JPH01119490U (th) | 1988-02-01 | 1988-02-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01119490U true JPH01119490U (th) | 1989-08-14 |
Family
ID=31221614
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1229788U Pending JPH01119490U (th) | 1988-02-01 | 1988-02-01 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01119490U (th) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0561294U (ja) * | 1992-01-20 | 1993-08-13 | 関電興業株式会社 | 地中推進管 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5838670A (ja) * | 1981-08-31 | 1983-03-07 | Japan Steel & Tube Constr Co Ltd | 溶接開先倣い方法 |
| JPS5842477B2 (ja) * | 1976-09-27 | 1983-09-20 | 株式会社河合楽器製作所 | 電子楽器 |
-
1988
- 1988-02-01 JP JP1229788U patent/JPH01119490U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5842477B2 (ja) * | 1976-09-27 | 1983-09-20 | 株式会社河合楽器製作所 | 電子楽器 |
| JPS5838670A (ja) * | 1981-08-31 | 1983-03-07 | Japan Steel & Tube Constr Co Ltd | 溶接開先倣い方法 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0561294U (ja) * | 1992-01-20 | 1993-08-13 | 関電興業株式会社 | 地中推進管 |