FR872048A - - Google Patents
Info
- Publication number
- FR872048A FR872048A FR872048DA FR872048A FR 872048 A FR872048 A FR 872048A FR 872048D A FR872048D A FR 872048DA FR 872048 A FR872048 A FR 872048A
- Authority
- FR
- France
- 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
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/48—Chocks or the like
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR872048A true FR872048A (da) | 1942-05-29 |
Family
ID=1555675
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR872048D Expired FR872048A (da) |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR872048A (da) |
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0
- FR FR872048D patent/FR872048A/fr not_active Expired