NL81420C - - Google Patents
Info
- Publication number
- NL81420C NL81420C NL81420DA NL81420C NL 81420 C NL81420 C NL 81420C NL 81420D A NL81420D A NL 81420DA NL 81420 C NL81420 C NL 81420C
- 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)
- Hooks, Suction Cups, And Attachment By Adhesive Means (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEV35A DE833936C (de) | 1949-10-18 | 1949-10-18 | Stahlkappenverbindung fuer den Strebausbau |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL81420C true NL81420C (en:Method) |
Family
ID=7568884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL81420D NL81420C (en:Method) | 1949-10-18 |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE501784A (en:Method) |
| DE (1) | DE833936C (en:Method) |
| NL (1) | NL81420C (en:Method) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1188024B (de) * | 1952-10-06 | 1965-03-04 | Aloys Vanwersch | Kappenverbindung fuer den Strebausbau |
| BE535250A (en:Method) * | 1954-01-29 | |||
| DE1114764B (de) * | 1956-08-25 | 1961-10-12 | Hermann Schwarz K G | Schwenkbare Kappenverbindung fuer den Strebausbau |
| DE1197417B (de) * | 1964-02-26 | 1965-07-29 | Aloys Vanwersch | Kappenverbindung fuer den Grubenausbau in Untertagebetrieben |
-
0
- NL NL81420D patent/NL81420C/xx active
- BE BE501784D patent/BE501784A/xx unknown
-
1949
- 1949-10-18 DE DEV35A patent/DE833936C/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| BE501784A (en:Method) | |
| DE833936C (de) | 1952-03-13 |