BE629617A - - Google Patents
Info
- Publication number
- BE629617A BE629617A BE629617DA BE629617A BE 629617 A BE629617 A BE 629617A BE 629617D A BE629617D A BE 629617DA BE 629617 A BE629617 A BE 629617A
- Authority
- BE
- Belgium
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D17/00—Caps for supporting mine roofs
- E21D17/02—Cantilever extension or similar protecting devices
- E21D17/08—Cap joints for obtaining a coal-face free of pit-props
- E21D17/086—Cap joints for obtaining a coal-face free of pit-props or articulated type
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 |
|---|---|---|---|
| FR927191A FR1349804A (fr) | 1963-03-07 | 1963-03-07 | Assemblage de chapeaux pour jambes de force dans les exploitations minières |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE629617A true BE629617A (zh) |
Family
ID=8798699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE629617D BE629617A (zh) | 1963-03-07 |
Country Status (2)
| Country | Link |
|---|---|
| BE (1) | BE629617A (zh) |
| FR (1) | FR1349804A (zh) |
-
0
- BE BE629617D patent/BE629617A/xx unknown
-
1963
- 1963-03-07 FR FR927191A patent/FR1349804A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR1349804A (fr) | 1964-01-17 |