FR1176047A - Perfectionnements au soutènement - Google Patents
Perfectionnements au soutènementInfo
- Publication number
- FR1176047A FR1176047A FR1176047DA FR1176047A FR 1176047 A FR1176047 A FR 1176047A FR 1176047D A FR1176047D A FR 1176047DA FR 1176047 A FR1176047 A FR 1176047A
- Authority
- FR
- France
- Prior art keywords
- support improvements
- support
- 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.)
- Expired
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D19/00—Provisional protective covers for working space
- E21D19/04—Provisional protective covers for working space for use in drifting galleries
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1176047T | 1957-06-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR1176047A true FR1176047A (fr) | 1959-04-03 |
Family
ID=9659529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR1176047D Expired FR1176047A (fr) | 1957-06-13 | 1957-06-13 | Perfectionnements au soutènement |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR1176047A (fr) |
-
1957
- 1957-06-13 FR FR1176047D patent/FR1176047A/fr not_active Expired
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