BE555935A - - Google Patents
Info
- Publication number
- BE555935A BE555935A BE555935DA BE555935A BE 555935 A BE555935 A BE 555935A BE 555935D A BE555935D A BE 555935DA BE 555935 A BE555935 A BE 555935A
- Authority
- BE
- Belgium
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)
- Valves And Accessory Devices For Braking Systems (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT859878X | 1956-03-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE555935A true BE555935A (fr) |
Family
ID=3682329
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE555935D BE555935A (fr) | 1956-03-19 |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE555935A (fr) |
| FR (1) | FR1173246A (fr) |
| GB (1) | GB859878A (fr) |
-
0
- BE BE555935D patent/BE555935A/xx unknown
-
1957
- 1957-03-18 FR FR1173246D patent/FR1173246A/fr not_active Expired
- 1957-03-19 GB GB8929/57A patent/GB859878A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB859878A (en) | 1961-01-25 |
| FR1173246A (fr) | 1959-02-23 |