JPS5617510B2 - - Google Patents
Info
- Publication number
- JPS5617510B2 JPS5617510B2 JP6773477A JP6773477A JPS5617510B2 JP S5617510 B2 JPS5617510 B2 JP S5617510B2 JP 6773477 A JP6773477 A JP 6773477A JP 6773477 A JP6773477 A JP 6773477A JP S5617510 B2 JPS5617510 B2 JP S5617510B2
- Authority
- JP
- Japan
- 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.)
- Expired
Links
Landscapes
- Earth Drilling (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6773477A JPS542201A (en) | 1977-06-08 | 1977-06-08 | Striking and crushing type drill bit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6773477A JPS542201A (en) | 1977-06-08 | 1977-06-08 | Striking and crushing type drill bit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS542201A JPS542201A (en) | 1979-01-09 |
JPS5617510B2 true JPS5617510B2 (no) | 1981-04-22 |
Family
ID=13353468
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6773477A Granted JPS542201A (en) | 1977-06-08 | 1977-06-08 | Striking and crushing type drill bit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS542201A (no) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5010522A (no) * | 1973-05-25 | 1975-02-03 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5010522B1 (no) * | 1970-05-29 | 1975-04-22 |
-
1977
- 1977-06-08 JP JP6773477A patent/JPS542201A/ja active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5010522A (no) * | 1973-05-25 | 1975-02-03 |
Also Published As
Publication number | Publication date |
---|---|
JPS542201A (en) | 1979-01-09 |