JPS492313A - - Google Patents
Info
- Publication number
- JPS492313A JPS492313A JP4189972A JP4189972A JPS492313A JP S492313 A JPS492313 A JP S492313A JP 4189972 A JP4189972 A JP 4189972A JP 4189972 A JP4189972 A JP 4189972A JP S492313 A JPS492313 A JP S492313A
- 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
- Excavating Of Shafts Or Tunnels (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4189972A JPS492313A (enExample) | 1972-04-24 | 1972-04-24 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4189972A JPS492313A (enExample) | 1972-04-24 | 1972-04-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS492313A true JPS492313A (enExample) | 1974-01-10 |
Family
ID=12621121
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4189972A Pending JPS492313A (enExample) | 1972-04-24 | 1972-04-24 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS492313A (enExample) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2967401A (en) * | 1955-03-16 | 1961-01-10 | American Marietta Co | Apparatus for jacking tunnels |
-
1972
- 1972-04-24 JP JP4189972A patent/JPS492313A/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2967401A (en) * | 1955-03-16 | 1961-01-10 | American Marietta Co | Apparatus for jacking tunnels |