JPS61188690U - - Google Patents
Info
- Publication number
- JPS61188690U JPS61188690U JP7112785U JP7112785U JPS61188690U JP S61188690 U JPS61188690 U JP S61188690U JP 7112785 U JP7112785 U JP 7112785U JP 7112785 U JP7112785 U JP 7112785U JP S61188690 U JPS61188690 U JP S61188690U
- Authority
- JP
- Japan
- Prior art keywords
- bit
- cutting edge
- attached above
- letter
- registration request
- 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
- 238000009412 basement excavation Methods 0.000 claims 1
- 239000002131 composite material Substances 0.000 claims 1
Landscapes
- Earth Drilling (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7112785U JPH0230550Y2 (ro) | 1985-05-14 | 1985-05-14 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7112785U JPH0230550Y2 (ro) | 1985-05-14 | 1985-05-14 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61188690U true JPS61188690U (ro) | 1986-11-25 |
| JPH0230550Y2 JPH0230550Y2 (ro) | 1990-08-16 |
Family
ID=30608340
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7112785U Expired JPH0230550Y2 (ro) | 1985-05-14 | 1985-05-14 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0230550Y2 (ro) |
-
1985
- 1985-05-14 JP JP7112785U patent/JPH0230550Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0230550Y2 (ro) | 1990-08-16 |