JPS6242909U - - Google Patents
Info
- Publication number
- JPS6242909U JPS6242909U JP13422985U JP13422985U JPS6242909U JP S6242909 U JPS6242909 U JP S6242909U JP 13422985 U JP13422985 U JP 13422985U JP 13422985 U JP13422985 U JP 13422985U JP S6242909 U JPS6242909 U JP S6242909U
- Authority
- JP
- Japan
- Prior art keywords
- drill
- electric
- level
- tip
- detect
- 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
- Drilling And Boring (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13422985U JPS6242909U (de) | 1985-09-02 | 1985-09-02 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13422985U JPS6242909U (de) | 1985-09-02 | 1985-09-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6242909U true JPS6242909U (de) | 1987-03-14 |
Family
ID=31035279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13422985U Pending JPS6242909U (de) | 1985-09-02 | 1985-09-02 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6242909U (de) |
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1985
- 1985-09-02 JP JP13422985U patent/JPS6242909U/ja active Pending