JPS56142991A - Drilling bit - Google Patents
Drilling bitInfo
- Publication number
- JPS56142991A JPS56142991A JP4417480A JP4417480A JPS56142991A JP S56142991 A JPS56142991 A JP S56142991A JP 4417480 A JP4417480 A JP 4417480A JP 4417480 A JP4417480 A JP 4417480A JP S56142991 A JPS56142991 A JP S56142991A
- Authority
- JP
- Japan
- Prior art keywords
- drilling bit
- drilling
- 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 |
---|---|---|---|
JP4417480A JPS56142991A (en) | 1980-04-03 | 1980-04-03 | Drilling bit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4417480A JPS56142991A (en) | 1980-04-03 | 1980-04-03 | Drilling bit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS56142991A true JPS56142991A (en) | 1981-11-07 |
JPS6118636B2 JPS6118636B2 (no) | 1986-05-13 |
Family
ID=12684209
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4417480A Granted JPS56142991A (en) | 1980-04-03 | 1980-04-03 | Drilling bit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56142991A (no) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61116892U (no) * | 1984-12-28 | 1986-07-23 | ||
JPH0273494U (no) * | 1988-11-24 | 1990-06-05 |
-
1980
- 1980-04-03 JP JP4417480A patent/JPS56142991A/ja active Granted
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61116892U (no) * | 1984-12-28 | 1986-07-23 | ||
JPH0273494U (no) * | 1988-11-24 | 1990-06-05 |
Also Published As
Publication number | Publication date |
---|---|
JPS6118636B2 (no) | 1986-05-13 |
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