JPS57143094A - Underground drilling apparatus - Google Patents
Underground drilling apparatusInfo
- Publication number
- JPS57143094A JPS57143094A JP2876081A JP2876081A JPS57143094A JP S57143094 A JPS57143094 A JP S57143094A JP 2876081 A JP2876081 A JP 2876081A JP 2876081 A JP2876081 A JP 2876081A JP S57143094 A JPS57143094 A JP S57143094A
- Authority
- JP
- Japan
- Prior art keywords
- drilling apparatus
- underground drilling
- underground
- drilling
- 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.)
- Pending
Links
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2876081A JPS57143094A (en) | 1981-02-27 | 1981-02-27 | Underground drilling apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2876081A JPS57143094A (en) | 1981-02-27 | 1981-02-27 | Underground drilling apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57143094A true JPS57143094A (en) | 1982-09-04 |
Family
ID=12257357
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2876081A Pending JPS57143094A (en) | 1981-02-27 | 1981-02-27 | Underground drilling apparatus |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57143094A (en) |
-
1981
- 1981-02-27 JP JP2876081A patent/JPS57143094A/en active Pending
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