JPH0193281U - - Google Patents
Info
- Publication number
- JPH0193281U JPH0193281U JP18887987U JP18887987U JPH0193281U JP H0193281 U JPH0193281 U JP H0193281U JP 18887987 U JP18887987 U JP 18887987U JP 18887987 U JP18887987 U JP 18887987U JP H0193281 U JPH0193281 U JP H0193281U
- Authority
- JP
- Japan
- Prior art keywords
- drill bit
- screw
- drill
- discharge
- convey
- 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
- 239000004576 sand Substances 0.000 claims description 2
- 239000011435 rock Substances 0.000 claims 1
Landscapes
- Earth Drilling (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18887987U JPH0193281U (sv) | 1987-12-14 | 1987-12-14 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18887987U JPH0193281U (sv) | 1987-12-14 | 1987-12-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0193281U true JPH0193281U (sv) | 1989-06-19 |
Family
ID=31479945
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18887987U Pending JPH0193281U (sv) | 1987-12-14 | 1987-12-14 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0193281U (sv) |
-
1987
- 1987-12-14 JP JP18887987U patent/JPH0193281U/ja active Pending
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