BE569133A - - Google Patents
Info
- Publication number
- BE569133A BE569133A BE569133DA BE569133A BE 569133 A BE569133 A BE 569133A BE 569133D A BE569133D A BE 569133DA BE 569133 A BE569133 A BE 569133A
- 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)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2112157A GB891140A (en) | 1957-07-04 | 1957-07-04 | Improvements in or relating to mine roof supporting bars |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE569133A true BE569133A (US06252093-20010626-C00008.png) |
Family
ID=10157548
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE569133D BE569133A (US06252093-20010626-C00008.png) | 1957-07-04 |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE569133A (US06252093-20010626-C00008.png) |
| FR (1) | FR1207659A (US06252093-20010626-C00008.png) |
| GB (1) | GB891140A (US06252093-20010626-C00008.png) |
| NL (1) | NL229339A (US06252093-20010626-C00008.png) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3320751A (en) * | 1962-01-29 | 1967-05-23 | Groetschel Karl Maria | Support |
-
0
- BE BE569133D patent/BE569133A/xx unknown
- NL NL229339D patent/NL229339A/xx unknown
-
1957
- 1957-07-04 GB GB2112157A patent/GB891140A/en not_active Expired
-
1958
- 1958-07-03 FR FR1207659D patent/FR1207659A/fr not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3320751A (en) * | 1962-01-29 | 1967-05-23 | Groetschel Karl Maria | Support |
Also Published As
| Publication number | Publication date |
|---|---|
| NL229339A (US06252093-20010626-C00008.png) | |
| FR1207659A (fr) | 1960-02-18 |
| GB891140A (en) | 1962-03-14 |
