JPH0571757B2 - - Google Patents
Info
- Publication number
- JPH0571757B2 JPH0571757B2 JP6748088A JP6748088A JPH0571757B2 JP H0571757 B2 JPH0571757 B2 JP H0571757B2 JP 6748088 A JP6748088 A JP 6748088A JP 6748088 A JP6748088 A JP 6748088A JP H0571757 B2 JPH0571757 B2 JP H0571757B2
- Authority
- JP
- Japan
- Prior art keywords
- rod
- rotary head
- cylinder
- drilling
- kelly
- 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.)
- Expired - Fee Related
Links
Landscapes
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6748088A JPS6490390A (en) | 1988-03-23 | 1988-03-23 | Boring machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6748088A JPS6490390A (en) | 1988-03-23 | 1988-03-23 | Boring machine |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6490390A JPS6490390A (en) | 1989-04-06 |
JPH0571757B2 true JPH0571757B2 (enrdf_load_stackoverflow) | 1993-10-07 |
Family
ID=13346178
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6748088A Granted JPS6490390A (en) | 1988-03-23 | 1988-03-23 | Boring machine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6490390A (enrdf_load_stackoverflow) |
-
1988
- 1988-03-23 JP JP6748088A patent/JPS6490390A/ja active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS6490390A (en) | 1989-04-06 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
LAPS | Cancellation because of no payment of annual fees |