FR1002994A - étai de mine en fer - Google Patents
étai de mine en ferInfo
- Publication number
- FR1002994A FR1002994A FR1002994DA FR1002994A FR 1002994 A FR1002994 A FR 1002994A FR 1002994D A FR1002994D A FR 1002994DA FR 1002994 A FR1002994 A FR 1002994A
- Authority
- FR
- France
- Prior art keywords
- iron mine
- mine prop
- prop
- iron
- mine
- 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
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title 2
- 229910052742 iron Inorganic materials 0.000 title 1
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
- E21D15/14—Telescopic props
- E21D15/28—Telescopic props with parts held relatively to each other by friction or gripping
- E21D15/285—Telescopic props with parts held relatively to each other by friction or gripping by means of wedges or wedge combinations
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)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1002994T | 1946-11-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR1002994A true FR1002994A (fr) | 1952-03-12 |
Family
ID=9562580
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR1002994D Expired FR1002994A (fr) | 1946-11-15 | 1946-11-15 | étai de mine en fer |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR1002994A (fr) |
-
1946
- 1946-11-15 FR FR1002994D patent/FR1002994A/fr not_active Expired
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