JPS531224Y2 - - Google Patents
Info
- Publication number
- JPS531224Y2 JPS531224Y2 JP1974041970U JP4197074U JPS531224Y2 JP S531224 Y2 JPS531224 Y2 JP S531224Y2 JP 1974041970 U JP1974041970 U JP 1974041970U JP 4197074 U JP4197074 U JP 4197074U JP S531224 Y2 JPS531224 Y2 JP S531224Y2
- 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
- Excavating Of Shafts Or Tunnels (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1974041970U JPS531224Y2 (en:Method) | 1974-04-15 | 1974-04-15 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1974041970U JPS531224Y2 (en:Method) | 1974-04-15 | 1974-04-15 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS50131139U JPS50131139U (en:Method) | 1975-10-28 |
| JPS531224Y2 true JPS531224Y2 (en:Method) | 1978-01-14 |
Family
ID=28170365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1974041970U Expired JPS531224Y2 (en:Method) | 1974-04-15 | 1974-04-15 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS531224Y2 (en:Method) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52128633A (en) * | 1976-04-21 | 1977-10-28 | Hitachi Construction Machinery | Earth pressure control method of tunnel excavator |
| JPS6124622Y2 (en:Method) * | 1980-10-16 | 1986-07-23 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3561223A (en) * | 1968-07-09 | 1971-02-09 | John R Tabor | Tunneling machine with concrete wall forming mechanism |
| JPS4832194U (en:Method) * | 1971-08-19 | 1973-04-18 | ||
| JPS4917029A (en:Method) * | 1972-06-10 | 1974-02-15 |
-
1974
- 1974-04-15 JP JP1974041970U patent/JPS531224Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS50131139U (en:Method) | 1975-10-28 |