BE487158A - - Google Patents
Info
- Publication number
- BE487158A BE487158A BE487158DA BE487158A BE 487158 A BE487158 A BE 487158A BE 487158D A BE487158D A BE 487158DA BE 487158 A BE487158 A BE 487158A
- Authority
- BE
- Belgium
- Prior art keywords
- emi
- waist
- roof
- variable
- contact
- Prior art date
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)
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
- Electrophonic Musical Instruments (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR59148T | 1949-04-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE487158A true BE487158A (h) |
Family
ID=8692991
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE487158D BE487158A (h) | 1949-04-08 | ||
| BE494909D BE494909A (h) | 1949-04-08 |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE494909D BE494909A (h) | 1949-04-08 |
Country Status (2)
| Country | Link |
|---|---|
| BE (2) | BE494909A (h) |
| FR (2) | FR59148E (h) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1130143A (fr) * | 1955-07-27 | 1957-01-31 | Rallonge articulée pour supports de mines | |
| DE1127301B (de) * | 1956-08-14 | 1962-04-12 | Karl Gerlach | Kappenverbindung fuer den Strebausbau |
-
0
- FR FR961507D patent/FR961507A/fr not_active Expired
- BE BE487158D patent/BE487158A/fr unknown
- BE BE494909D patent/BE494909A/fr unknown
-
1949
- 1949-04-08 FR FR59148D patent/FR59148E/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR961507A (h) | 1950-05-13 |
| BE494909A (h) | |
| FR59148E (fr) | 1954-04-23 |
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