JPH02120594U - - Google Patents
Info
- Publication number
- JPH02120594U JPH02120594U JP2709889U JP2709889U JPH02120594U JP H02120594 U JPH02120594 U JP H02120594U JP 2709889 U JP2709889 U JP 2709889U JP 2709889 U JP2709889 U JP 2709889U JP H02120594 U JPH02120594 U JP H02120594U
- Authority
- JP
- Japan
- Prior art keywords
- cutter head
- inner tube
- head
- tube
- bored
- 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
- 239000007788 liquid Substances 0.000 claims description 4
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2709889U JPH02120594U (da) | 1989-03-09 | 1989-03-09 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2709889U JPH02120594U (da) | 1989-03-09 | 1989-03-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02120594U true JPH02120594U (da) | 1990-09-28 |
Family
ID=31249311
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2709889U Pending JPH02120594U (da) | 1989-03-09 | 1989-03-09 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02120594U (da) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5654438A (en) * | 1979-10-11 | 1981-05-14 | Nippon Telegr & Teleph Corp <Ntt> | Locator in information retrieving device |
-
1989
- 1989-03-09 JP JP2709889U patent/JPH02120594U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5654438A (en) * | 1979-10-11 | 1981-05-14 | Nippon Telegr & Teleph Corp <Ntt> | Locator in information retrieving device |