FR1173560A - étançon de mines - Google Patents
étançon de minesInfo
- Publication number
- FR1173560A FR1173560A FR1173560DA FR1173560A FR 1173560 A FR1173560 A FR 1173560A FR 1173560D A FR1173560D A FR 1173560DA FR 1173560 A FR1173560 A FR 1173560A
- Authority
- FR
- France
- Prior art keywords
- mine prop
- prop
- 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
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
- E21D15/50—Component parts or details of props
- E21D15/52—Extensible units located above or below standard props
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 |
|---|---|---|---|
| DE1173560X | 1956-04-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR1173560A true FR1173560A (fr) | 1959-02-26 |
Family
ID=7729553
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR1173560D Expired FR1173560A (fr) | 1956-04-18 | 1957-04-09 | étançon de mines |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR1173560A (fr) |
-
1957
- 1957-04-09 FR FR1173560D patent/FR1173560A/fr not_active Expired
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