JPS6297897U - - Google Patents
Info
- Publication number
- JPS6297897U JPS6297897U JP19075585U JP19075585U JPS6297897U JP S6297897 U JPS6297897 U JP S6297897U JP 19075585 U JP19075585 U JP 19075585U JP 19075585 U JP19075585 U JP 19075585U JP S6297897 U JPS6297897 U JP S6297897U
- Authority
- JP
- Japan
- Prior art keywords
- ring body
- opening
- center
- held
- approximately
- 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 description 4
- 230000000149 penetrating effect Effects 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
Landscapes
- Earth Drilling (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19075585U JPS6297897U (en]) | 1985-12-11 | 1985-12-11 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19075585U JPS6297897U (en]) | 1985-12-11 | 1985-12-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6297897U true JPS6297897U (en]) | 1987-06-22 |
Family
ID=31144269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19075585U Pending JPS6297897U (en]) | 1985-12-11 | 1985-12-11 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6297897U (en]) |
-
1985
- 1985-12-11 JP JP19075585U patent/JPS6297897U/ja active Pending