BE499866A - - Google Patents
Info
- Publication number
- BE499866A BE499866A BE499866DA BE499866A BE 499866 A BE499866 A BE 499866A BE 499866D A BE499866D A BE 499866DA BE 499866 A BE499866 A BE 499866A
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/0064—Moulds characterised by special surfaces for producing a desired surface of a moulded article, e.g. profiled or polished moulding surfaces
- B28B7/0067—Moulds characterised by special surfaces for producing a desired surface of a moulded article, e.g. profiled or polished moulding surfaces with polished or glossy moulding surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/34—Moulds, cores, or mandrels of special material, e.g. destructible materials
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Pivots And Pivotal Connections (AREA)
- Emergency Lowering Means (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR831565X | 1956-06-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE499866A true BE499866A (fr) |
Family
ID=9292721
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE499866D BE499866A (fr) | 1956-06-13 |
Country Status (5)
| Country | Link |
|---|---|
| BE (1) | BE499866A (fr) |
| DE (2) | DE968919C (fr) |
| FR (3) | FR1023255A (fr) |
| GB (2) | GB704698A (fr) |
| NL (1) | NL88048C (fr) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE741949C (de) * | 1942-04-15 | 1943-11-19 | Alois Vanwersch | Als Gelenk ausgebildete Schaleneisenverbindung fuer den Grubenausbau |
| DE806133C (de) * | 1948-10-02 | 1951-06-11 | Johannes Ecker | Gelenkverbindung fuer Stahlkappen |
-
0
- NL NL88048D patent/NL88048C/xx active
- BE BE499866D patent/BE499866A/xx unknown
-
1950
- 1950-08-11 FR FR1023255D patent/FR1023255A/fr not_active Expired
- 1950-11-22 FR FR1028255D patent/FR1028255A/fr not_active Expired
-
1951
- 1951-04-19 DE DER5777A patent/DE968919C/de not_active Expired
- 1951-09-25 GB GB22448/51A patent/GB704698A/en not_active Expired
-
1956
- 1956-06-13 FR FR69607D patent/FR69607E/fr not_active Expired
-
1957
- 1957-06-12 DE DES53861A patent/DE1045944B/de active Pending
- 1957-06-13 GB GB18721/57A patent/GB831565A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE1045944B (de) | 1958-12-11 |
| FR69607E (fr) | 1958-11-10 |
| GB831565A (en) | 1960-03-30 |
| FR1023255A (fr) | 1953-03-16 |
| FR1028255A (fr) | 1953-05-20 |
| NL88048C (fr) | |
| GB704698A (en) | 1954-02-24 |
| DE968919C (de) | 1958-04-10 |