JPS57143092A - Underground drilling apparatus - Google Patents
Underground drilling apparatusInfo
- Publication number
- JPS57143092A JPS57143092A JP2876181A JP2876181A JPS57143092A JP S57143092 A JPS57143092 A JP S57143092A JP 2876181 A JP2876181 A JP 2876181A JP 2876181 A JP2876181 A JP 2876181A JP S57143092 A JPS57143092 A JP S57143092A
- 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
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
- Earth Drilling (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2876181A JPS57143092A (en) | 1981-02-27 | 1981-02-27 | Underground drilling apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2876181A JPS57143092A (en) | 1981-02-27 | 1981-02-27 | Underground drilling apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57143092A true JPS57143092A (en) | 1982-09-04 |
Family
ID=12257386
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2876181A Pending JPS57143092A (en) | 1981-02-27 | 1981-02-27 | Underground drilling apparatus |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57143092A (en) |
-
1981
- 1981-02-27 JP JP2876181A patent/JPS57143092A/en active Pending
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