NL89705C - - Google Patents
Info
- Publication number
- NL89705C NL89705C NL89705DA NL89705C NL 89705 C NL89705 C NL 89705C NL 89705D A NL89705D A NL 89705DA NL 89705 C NL89705 C NL 89705C
- 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
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)
- Mutual Connection Of Rods And Tubes (AREA)
- Joining Of Building Structures In Genera (AREA)
- Connection Of Plates (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE406561 | 1953-04-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL89705C true NL89705C (en:Method) |
Family
ID=45816025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL89705D NL89705C (en:Method) | 1953-04-15 |
Country Status (5)
| Country | Link |
|---|---|
| BE (1) | BE519224A (en:Method) |
| DE (1) | DE1171383B (en:Method) |
| FR (1) | FR1096149A (en:Method) |
| GB (1) | GB758867A (en:Method) |
| NL (1) | NL89705C (en:Method) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1279170A (en) * | 1970-11-16 | 1972-06-28 | Hunter Douglas | Curtain track fittings |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE804317C (de) * | 1949-03-22 | 1951-04-19 | Otto Leppak | Verfahren zur Schaffung einer stempelfreien Abbaufront beim eisernen Strebausbau |
| DE835586C (de) * | 1949-11-25 | 1952-04-03 | Hans Gerlach | Grubenausbau, insbesondere fuer eine stempelfreie Abbaufront |
| DE933325C (de) * | 1952-01-16 | 1955-09-22 | Gutehoffnungshuette Sterkrade | Schraegverzahnte Gelenkverbindung |
-
0
- NL NL89705D patent/NL89705C/xx active
- BE BE519224D patent/BE519224A/xx unknown
-
1954
- 1954-03-22 FR FR1096149D patent/FR1096149A/fr not_active Expired
- 1954-04-09 DE DE1954P0011729 patent/DE1171383B/de active Pending
- 1954-04-15 GB GB1113554A patent/GB758867A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE1171383B (de) | 1964-06-04 |
| BE519224A (en:Method) | |
| GB758867A (en) | 1956-10-10 |
| FR1096149A (fr) | 1955-06-09 |