BE500044A - - Google Patents
Info
- Publication number
- BE500044A BE500044A BE500044DA BE500044A BE 500044 A BE500044 A BE 500044A BE 500044D A BE500044D A BE 500044DA BE 500044 A BE500044 A BE 500044A
- 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)
- Orthopedics, Nursing, And Contraception (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP56415A DE853736C (de) | 1949-09-30 | 1949-09-30 | Stahlkappenverbindung fuer den Strebausbau im Grubenbetrieb |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE500044A true BE500044A (en]) |
Family
ID=7388422
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE500044D BE500044A (en]) | 1949-09-30 |
Country Status (2)
| Country | Link |
|---|---|
| BE (1) | BE500044A (en]) |
| DE (1) | DE853736C (en]) |
-
0
- BE BE500044D patent/BE500044A/xx unknown
-
1949
- 1949-09-30 DE DEP56415A patent/DE853736C/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE853736C (de) | 1953-01-05 |