BE513045A - - Google Patents
Info
- Publication number
- BE513045A BE513045A BE513045DA BE513045A BE 513045 A BE513045 A BE 513045A BE 513045D A BE513045D A BE 513045DA BE 513045 A BE513045 A BE 513045A
- 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)
- Golf Clubs (AREA)
- Holders For Apparel And Elements Relating To Apparel (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE742741X | 1952-07-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE513045A true BE513045A (en:Method) |
Family
ID=3879449
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE513045D BE513045A (en:Method) | 1952-07-23 |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE513045A (en:Method) |
| FR (1) | FR1077441A (en:Method) |
| GB (1) | GB742741A (en:Method) |
| LU (1) | LU32191A1 (en:Method) |
-
0
- LU LU32191D patent/LU32191A1/xx unknown
- BE BE513045D patent/BE513045A/xx unknown
-
1953
- 1953-05-19 FR FR1077441D patent/FR1077441A/fr not_active Expired
- 1953-06-12 GB GB16238/53A patent/GB742741A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR1077441A (fr) | 1954-11-08 |
| LU32191A1 (en:Method) | |
| GB742741A (en) | 1956-01-04 |