JPH0211893U - - Google Patents
Info
- Publication number
- JPH0211893U JPH0211893U JP8840388U JP8840388U JPH0211893U JP H0211893 U JPH0211893 U JP H0211893U JP 8840388 U JP8840388 U JP 8840388U JP 8840388 U JP8840388 U JP 8840388U JP H0211893 U JPH0211893 U JP H0211893U
- Authority
- JP
- Japan
- Prior art keywords
- bit
- degrees
- base metal
- main blade
- cutter
- 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.)
- Granted
Links
- 239000010953 base metal Substances 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 2
- 230000005641 tunneling Effects 0.000 description 1
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
- Earth Drilling (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8840388U JPH0538158Y2 (en, 2012) | 1988-07-01 | 1988-07-01 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8840388U JPH0538158Y2 (en, 2012) | 1988-07-01 | 1988-07-01 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0211893U true JPH0211893U (en, 2012) | 1990-01-25 |
| JPH0538158Y2 JPH0538158Y2 (en, 2012) | 1993-09-27 |
Family
ID=31312969
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8840388U Expired - Lifetime JPH0538158Y2 (en, 2012) | 1988-07-01 | 1988-07-01 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0538158Y2 (en, 2012) |
-
1988
- 1988-07-01 JP JP8840388U patent/JPH0538158Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0538158Y2 (en, 2012) | 1993-09-27 |
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