NL193873A - - Google Patents
Info
- Publication number
- NL193873A NL193873A NL193873DA NL193873A NL 193873 A NL193873 A NL 193873A NL 193873D A NL193873D A NL 193873DA NL 193873 A NL193873 A NL 193873A
- Authority
- NL
- Netherlands
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/14—Telescopic props
- E21D15/44—Hydraulic, pneumatic, or hydraulic-pneumatic props
- E21D15/45—Hydraulic, pneumatic, or hydraulic-pneumatic props having closed fluid system, e.g. with built-in pumps or accumulators
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Press Drives And Press Lines (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEE8438A DE971812C (de) | 1954-01-17 | 1954-01-17 | Hydraulische Stuetz- oder Hebeeinrichtung, insbesondere hydraulischer Grubenstempel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL193873A true NL193873A (de) |
Family
ID=7067406
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL106451D NL106451C (de) | 1954-01-17 | ||
| NL193873D NL193873A (de) | 1954-01-17 |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL106451D NL106451C (de) | 1954-01-17 |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE534011A (de) |
| DE (1) | DE971812C (de) |
| NL (2) | NL193873A (de) |
-
0
- BE BE534011D patent/BE534011A/xx unknown
- NL NL106451D patent/NL106451C/xx active
- NL NL193873D patent/NL193873A/xx unknown
-
1954
- 1954-01-17 DE DEE8438A patent/DE971812C/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE971812C (de) | 1959-04-02 |
| NL106451C (de) | |
| BE534011A (de) |