JPS61180285U - - Google Patents
Info
- Publication number
- JPS61180285U JPS61180285U JP5958685U JP5958685U JPS61180285U JP S61180285 U JPS61180285 U JP S61180285U JP 5958685 U JP5958685 U JP 5958685U JP 5958685 U JP5958685 U JP 5958685U JP S61180285 U JPS61180285 U JP S61180285U
- Authority
- JP
- Japan
- Prior art keywords
- cutter head
- guide pipe
- cutter
- pipe
- holding
- 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
- 238000005553 drilling Methods 0.000 claims 1
Landscapes
- Earth Drilling (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5958685U JPS61180285U (un) | 1985-04-23 | 1985-04-23 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5958685U JPS61180285U (un) | 1985-04-23 | 1985-04-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS61180285U true JPS61180285U (un) | 1986-11-10 |
Family
ID=30586150
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5958685U Pending JPS61180285U (un) | 1985-04-23 | 1985-04-23 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS61180285U (un) |
-
1985
- 1985-04-23 JP JP5958685U patent/JPS61180285U/ja active Pending