FR991551A - - Google Patents
Info
- Publication number
- FR991551A FR991551A FR991551DA FR991551A FR 991551 A FR991551 A FR 991551A FR 991551D A FR991551D A FR 991551DA FR 991551 A FR991551 A FR 991551A
- 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 DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F13/00—Transport specially adapted to underground conditions
- E21F13/08—Shifting conveyors or other transport devices from one location at the working face to another
- E21F13/086—Armoured conveyors shifting devices
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR991551A true FR991551A (de) | 1951-10-19 |
Family
ID=1566936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR991551D Expired FR991551A (de) |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR991551A (de) |
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0
- FR FR991551D patent/FR991551A/fr not_active Expired