JPS62181697U - - Google Patents
Info
- Publication number
- JPS62181697U JPS62181697U JP6689686U JP6689686U JPS62181697U JP S62181697 U JPS62181697 U JP S62181697U JP 6689686 U JP6689686 U JP 6689686U JP 6689686 U JP6689686 U JP 6689686U JP S62181697 U JPS62181697 U JP S62181697U
- Authority
- JP
- Japan
- Prior art keywords
- pin
- overall height
- bit
- pin support
- tunnel excavation
- 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)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6689686U JPS62181697U (en, 2012) | 1986-05-06 | 1986-05-06 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6689686U JPS62181697U (en, 2012) | 1986-05-06 | 1986-05-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62181697U true JPS62181697U (en, 2012) | 1987-11-18 |
Family
ID=30905312
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6689686U Pending JPS62181697U (en, 2012) | 1986-05-06 | 1986-05-06 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62181697U (en, 2012) |
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1986
- 1986-05-06 JP JP6689686U patent/JPS62181697U/ja active Pending