JPH02116588U - - Google Patents
Info
- Publication number
- JPH02116588U JPH02116588U JP2602389U JP2602389U JPH02116588U JP H02116588 U JPH02116588 U JP H02116588U JP 2602389 U JP2602389 U JP 2602389U JP 2602389 U JP2602389 U JP 2602389U JP H02116588 U JPH02116588 U JP H02116588U
- Authority
- JP
- Japan
- Prior art keywords
- tips
- lengths
- tip
- core piece
- center
- 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 |
---|---|---|---|
JP1989026023U JP2540956Y2 (ja) | 1989-03-07 | 1989-03-07 | ロックドリルビット |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1989026023U JP2540956Y2 (ja) | 1989-03-07 | 1989-03-07 | ロックドリルビット |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH02116588U true JPH02116588U (en)van) | 1990-09-18 |
JP2540956Y2 JP2540956Y2 (ja) | 1997-07-09 |
Family
ID=31247269
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1989026023U Expired - Lifetime JP2540956Y2 (ja) | 1989-03-07 | 1989-03-07 | ロックドリルビット |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2540956Y2 (en)van) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012237149A (ja) * | 2011-05-12 | 2012-12-06 | Okabe Co Ltd | 穿孔ビット |
JP2012237150A (ja) * | 2011-05-12 | 2012-12-06 | Okabe Co Ltd | 穿孔ビット |
-
1989
- 1989-03-07 JP JP1989026023U patent/JP2540956Y2/ja not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012237149A (ja) * | 2011-05-12 | 2012-12-06 | Okabe Co Ltd | 穿孔ビット |
JP2012237150A (ja) * | 2011-05-12 | 2012-12-06 | Okabe Co Ltd | 穿孔ビット |
Also Published As
Publication number | Publication date |
---|---|
JP2540956Y2 (ja) | 1997-07-09 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
EXPY | Cancellation because of completion of term |