JPS4920906A - - Google Patents
Info
- Publication number
- JPS4920906A JPS4920906A JP6071172A JP6071172A JPS4920906A JP S4920906 A JPS4920906 A JP S4920906A JP 6071172 A JP6071172 A JP 6071172A JP 6071172 A JP6071172 A JP 6071172A JP S4920906 A JPS4920906 A JP S4920906A
- 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.)
- Pending
Links
Landscapes
- Earth Drilling (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6071172A JPS4920906A (en:Method) | 1972-06-17 | 1972-06-17 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6071172A JPS4920906A (en:Method) | 1972-06-17 | 1972-06-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS4920906A true JPS4920906A (en:Method) | 1974-02-23 |
Family
ID=13150131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6071172A Pending JPS4920906A (en:Method) | 1972-06-17 | 1972-06-17 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS4920906A (en:Method) |
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1972
- 1972-06-17 JP JP6071172A patent/JPS4920906A/ja active Pending