BE649544A - - Google Patents
Info
- Publication number
- BE649544A BE649544A BE649544DA BE649544A BE 649544 A BE649544 A BE 649544A BE 649544D A BE649544D A BE 649544DA BE 649544 A BE649544 A BE 649544A
- Authority
- BE
- Belgium
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/0047—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor without essential shifting devices
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/0052—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor with advancing shifting devices connected therewith
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)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL294373 | 1963-06-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE649544A true BE649544A (US06521211-20030218-C00004.png) | 1964-12-21 |
Family
ID=19754804
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE649544D BE649544A (US06521211-20030218-C00004.png) | 1963-06-20 | 1964-06-19 |
Country Status (2)
| Country | Link |
|---|---|
| BE (1) | BE649544A (US06521211-20030218-C00004.png) |
| GB (1) | GB1065667A (US06521211-20030218-C00004.png) |
-
1964
- 1964-06-18 GB GB2532264A patent/GB1065667A/en not_active Expired
- 1964-06-19 BE BE649544D patent/BE649544A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| GB1065667A (en) | 1967-04-19 |
