BE570089A - - Google Patents
Info
- Publication number
- BE570089A BE570089A BE570089DA BE570089A BE 570089 A BE570089 A BE 570089A BE 570089D A BE570089D A BE 570089DA BE 570089 A BE570089 A BE 570089A
- Authority
- BE
- Belgium
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/50—Component parts or details of props
- E21D15/51—Component parts or details of props specially adapted to hydraulic, pneumatic, or hydraulic-pneumatic props, e.g. arrangements of relief valves
- E21D15/512—Arrangement of valves
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE896428X | 1957-08-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE570089A true BE570089A (de) |
Family
ID=6848209
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE570089D BE570089A (de) | 1957-08-05 |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE570089A (de) |
| FR (1) | FR1201105A (de) |
| GB (1) | GB896428A (de) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2141733A (en) * | 1983-06-06 | 1985-01-03 | Mobil Oil Corp | Improved catalytic hydrodewaxing process |
| GB2152635A (en) * | 1984-01-05 | 1985-08-07 | Dobson Park Ind | Valve devices |
| CN112343564B (zh) * | 2020-11-03 | 2022-11-04 | 中国石油天然气股份有限公司 | 气井井下节流器气嘴自行掉落机构及使用方法 |
-
0
- BE BE570089D patent/BE570089A/xx unknown
-
1958
- 1958-08-01 GB GB24911/58A patent/GB896428A/en not_active Expired
- 1958-08-04 FR FR1201105D patent/FR1201105A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR1201105A (fr) | 1959-12-28 |
| GB896428A (en) | 1962-05-16 |