JPH0412589U - - Google Patents
Info
- Publication number
- JPH0412589U JPH0412589U JP5069890U JP5069890U JPH0412589U JP H0412589 U JPH0412589 U JP H0412589U JP 5069890 U JP5069890 U JP 5069890U JP 5069890 U JP5069890 U JP 5069890U JP H0412589 U JPH0412589 U JP H0412589U
- Authority
- JP
- Japan
- Prior art keywords
- outer pipe
- pipe
- inner pipe
- pipes
- diameter
- 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.)
- Granted
Links
- 238000005553 drilling Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Earth Drilling (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5069890U JP2505595Y2 (ja) | 1990-05-17 | 1990-05-17 | 地盤削孔ドリルの案内装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5069890U JP2505595Y2 (ja) | 1990-05-17 | 1990-05-17 | 地盤削孔ドリルの案内装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0412589U true JPH0412589U (un) | 1992-01-31 |
JP2505595Y2 JP2505595Y2 (ja) | 1996-07-31 |
Family
ID=31569471
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5069890U Expired - Lifetime JP2505595Y2 (ja) | 1990-05-17 | 1990-05-17 | 地盤削孔ドリルの案内装置 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2505595Y2 (un) |
-
1990
- 1990-05-17 JP JP5069890U patent/JP2505595Y2/ja not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JP2505595Y2 (ja) | 1996-07-31 |