JPS5419204B2 - - Google Patents
Info
- Publication number
- JPS5419204B2 JPS5419204B2 JP14520475A JP14520475A JPS5419204B2 JP S5419204 B2 JPS5419204 B2 JP S5419204B2 JP 14520475 A JP14520475 A JP 14520475A JP 14520475 A JP14520475 A JP 14520475A JP S5419204 B2 JPS5419204 B2 JP S5419204B2
- Authority
- JP
- Japan
- 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.)
- Expired
Links
Landscapes
- Earth Drilling (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US05/546,856 US4037672A (en) | 1974-08-12 | 1975-02-04 | Shaft drill break-out system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5190901A JPS5190901A (hu) | 1976-08-10 |
| JPS5419204B2 true JPS5419204B2 (hu) | 1979-07-13 |
Family
ID=24182321
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14520475A Expired JPS5419204B2 (hu) | 1975-02-04 | 1975-12-08 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5419204B2 (hu) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2155520B (en) * | 1984-02-24 | 1986-07-09 | Otc As | Derrick |
-
1975
- 1975-12-08 JP JP14520475A patent/JPS5419204B2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5190901A (hu) | 1976-08-10 |