NL86396C - - Google Patents
Info
- Publication number
- NL86396C NL86396C NL86396DA NL86396C NL 86396 C NL86396 C NL 86396C NL 86396D A NL86396D A NL 86396DA NL 86396 C NL86396 C NL 86396C
- 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)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEV643A DE974877C (de) | 1950-03-04 | 1950-03-04 | Kappenverbindung fuer den Strebausbau im Grubenbetrieb unter Tage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL86396C true NL86396C (en:Method) |
Family
ID=7569206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL86396D NL86396C (en:Method) | 1950-03-04 |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE501546A (en:Method) |
| DE (1) | DE974877C (en:Method) |
| NL (1) | NL86396C (en:Method) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE511825A (en:Method) * | 1952-05-31 | |||
| GB785063A (en) * | 1955-04-07 | 1957-10-23 | Josef Brand | Connection for lagging irons for use in mines |
-
0
- BE BE501546D patent/BE501546A/xx unknown
- NL NL86396D patent/NL86396C/xx active
-
1950
- 1950-03-04 DE DEV643A patent/DE974877C/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE974877C (de) | 1961-05-25 |
| BE501546A (en:Method) |