JPH03122190U - - Google Patents
Info
- Publication number
- JPH03122190U JPH03122190U JP3092690U JP3092690U JPH03122190U JP H03122190 U JPH03122190 U JP H03122190U JP 3092690 U JP3092690 U JP 3092690U JP 3092690 U JP3092690 U JP 3092690U JP H03122190 U JPH03122190 U JP H03122190U
- Authority
- JP
- Japan
- Prior art keywords
- bit
- face
- bullet
- work
- tips
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
Landscapes
- Earth Drilling (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3092690U JPH03122190U (th) | 1990-03-28 | 1990-03-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3092690U JPH03122190U (th) | 1990-03-28 | 1990-03-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03122190U true JPH03122190U (th) | 1991-12-13 |
Family
ID=31533648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3092690U Pending JPH03122190U (th) | 1990-03-28 | 1990-03-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03122190U (th) |
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1990
- 1990-03-28 JP JP3092690U patent/JPH03122190U/ja active Pending