JPS6442388U - - Google Patents
Info
- Publication number
- JPS6442388U JPS6442388U JP13325987U JP13325987U JPS6442388U JP S6442388 U JPS6442388 U JP S6442388U JP 13325987 U JP13325987 U JP 13325987U JP 13325987 U JP13325987 U JP 13325987U JP S6442388 U JPS6442388 U JP S6442388U
- Authority
- JP
- Japan
- Prior art keywords
- rod
- casing
- drilling device
- little
- drilling
- 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
- 238000005553 drilling Methods 0.000 claims 4
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
Landscapes
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
- Earth Drilling (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13325987U JPH061665Y2 (ja) | 1987-09-02 | 1987-09-02 | 穿孔装置 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13325987U JPH061665Y2 (ja) | 1987-09-02 | 1987-09-02 | 穿孔装置 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6442388U true JPS6442388U (enExample) | 1989-03-14 |
| JPH061665Y2 JPH061665Y2 (ja) | 1994-01-12 |
Family
ID=31390955
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13325987U Expired - Lifetime JPH061665Y2 (ja) | 1987-09-02 | 1987-09-02 | 穿孔装置 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH061665Y2 (enExample) |
-
1987
- 1987-09-02 JP JP13325987U patent/JPH061665Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH061665Y2 (ja) | 1994-01-12 |
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