NL253264A - - Google Patents
Info
- Publication number
- NL253264A NL253264A NL253264DA NL253264A NL 253264 A NL253264 A NL 253264A NL 253264D A NL253264D A NL 253264DA NL 253264 A NL253264 A NL 253264A
- 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
- E21D15/50—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
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)
- Safety Valves (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEK38100A DE1091966B (de) | 1959-06-30 | 1959-06-30 | Ventilanordnung fuer hydraulische Grubenstempel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL253264A true NL253264A (en:Method) |
Family
ID=7221258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL253264D NL253264A (en:Method) | 1959-06-30 |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE1091966B (en:Method) |
| NL (1) | NL253264A (en:Method) |
-
0
- NL NL253264D patent/NL253264A/xx unknown
-
1959
- 1959-06-30 DE DEK38100A patent/DE1091966B/de active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE1091966B (de) | 1960-11-03 |