JPS6294194U - - Google Patents
Info
- Publication number
- JPS6294194U JPS6294194U JP18329185U JP18329185U JPS6294194U JP S6294194 U JPS6294194 U JP S6294194U JP 18329185 U JP18329185 U JP 18329185U JP 18329185 U JP18329185 U JP 18329185U JP S6294194 U JPS6294194 U JP S6294194U
- Authority
- JP
- Japan
- Prior art keywords
- centrizer
- cap
- tip
- drilling machine
- acute
- 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
- 238000005553 drilling Methods 0.000 claims description 2
Landscapes
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
- Earth Drilling (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18329185U JPS6294194U (pl) | 1985-11-28 | 1985-11-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18329185U JPS6294194U (pl) | 1985-11-28 | 1985-11-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6294194U true JPS6294194U (pl) | 1987-06-16 |
Family
ID=31129895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18329185U Pending JPS6294194U (pl) | 1985-11-28 | 1985-11-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6294194U (pl) |
-
1985
- 1985-11-28 JP JP18329185U patent/JPS6294194U/ja active Pending