NL6516415A - - Google Patents
Info
- Publication number
- NL6516415A NL6516415A NL6516415A NL6516415A NL6516415A NL 6516415 A NL6516415 A NL 6516415A NL 6516415 A NL6516415 A NL 6516415A NL 6516415 A NL6516415 A NL 6516415A NL 6516415 A NL6516415 A NL 6516415A
- Authority
- NL
- Netherlands
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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D17/00—Caps for supporting mine roofs
- E21D17/01—Caps for supporting mine roofs characterised by the shape of the cap, e.g. of specified cross-section
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)
- Tents Or Canopies (AREA)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1964G0031374 DE1913617U (de) | 1964-12-22 | 1964-12-22 | Grubenausbaukappe. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL6516415A true NL6516415A (xx) | 1966-06-23 |
Family
ID=7124217
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL6516415A NL6516415A (xx) | 1964-12-22 | 1965-12-16 |
Country Status (4)
| Country | Link |
|---|---|
| DE (1) | DE1913617U (xx) |
| FR (1) | FR1455718A (xx) |
| GB (1) | GB1119166A (xx) |
| NL (1) | NL6516415A (xx) |
-
1964
- 1964-12-22 DE DE1964G0031374 patent/DE1913617U/de not_active Expired
-
1965
- 1965-12-02 FR FR40653A patent/FR1455718A/fr not_active Expired
- 1965-12-09 GB GB5220665A patent/GB1119166A/en not_active Expired
- 1965-12-16 NL NL6516415A patent/NL6516415A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| FR1455718A (fr) | 1966-10-14 |
| DE1913617U (de) | 1965-04-15 |
| GB1119166A (en) | 1968-07-10 |