JPS61206790U - - Google Patents
Info
- Publication number
- JPS61206790U JPS61206790U JP9140785U JP9140785U JPS61206790U JP S61206790 U JPS61206790 U JP S61206790U JP 9140785 U JP9140785 U JP 9140785U JP 9140785 U JP9140785 U JP 9140785U JP S61206790 U JPS61206790 U JP S61206790U
- Authority
- JP
- Japan
- Prior art keywords
- cutting
- bit
- core
- recess
- end surface
- 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
Landscapes
- Earth Drilling (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9140785U JPH0141834Y2 (https=) | 1985-06-17 | 1985-06-17 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9140785U JPH0141834Y2 (https=) | 1985-06-17 | 1985-06-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61206790U true JPS61206790U (https=) | 1986-12-27 |
| JPH0141834Y2 JPH0141834Y2 (https=) | 1989-12-08 |
Family
ID=30647266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9140785U Expired JPH0141834Y2 (https=) | 1985-06-17 | 1985-06-17 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0141834Y2 (https=) |
-
1985
- 1985-06-17 JP JP9140785U patent/JPH0141834Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0141834Y2 (https=) | 1989-12-08 |