JPS63156287U - - Google Patents
Info
- Publication number
- JPS63156287U JPS63156287U JP4870687U JP4870687U JPS63156287U JP S63156287 U JPS63156287 U JP S63156287U JP 4870687 U JP4870687 U JP 4870687U JP 4870687 U JP4870687 U JP 4870687U JP S63156287 U JPS63156287 U JP S63156287U
- Authority
- JP
- Japan
- Prior art keywords
- groove
- bit
- bit body
- axis
- core bit
- 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 |
|---|---|---|---|
| JP4870687U JPH0645514Y2 (ja) | 1987-03-31 | 1987-03-31 | コアビツト |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4870687U JPH0645514Y2 (ja) | 1987-03-31 | 1987-03-31 | コアビツト |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63156287U true JPS63156287U (pt) | 1988-10-13 |
| JPH0645514Y2 JPH0645514Y2 (ja) | 1994-11-24 |
Family
ID=30870489
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4870687U Expired - Lifetime JPH0645514Y2 (ja) | 1987-03-31 | 1987-03-31 | コアビツト |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0645514Y2 (pt) |
-
1987
- 1987-03-31 JP JP4870687U patent/JPH0645514Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0645514Y2 (ja) | 1994-11-24 |