NL69904C - - Google Patents
Info
- Publication number
- NL69904C NL69904C NL152144A NL152144A NL69904C NL 69904 C NL69904 C NL 69904C NL 152144 A NL152144 A NL 152144A NL 152144 A NL152144 A NL 152144A NL 69904 C NL69904 C NL 69904C
- 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
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G50/00—Production of liquid hydrocarbon mixtures from lower carbon number hydrocarbons, e.g. by oligomerisation
- C10G50/02—Production of liquid hydrocarbon mixtures from lower carbon number hydrocarbons, e.g. by oligomerisation of hydrocarbon oils for lubricating purposes
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Mining & Mineral Resources (AREA)
- Geochemistry & Mineralogy (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Structural Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Organic Chemistry (AREA)
- Earth Drilling (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2237248A GB656800A (en) | 1948-08-25 | 1948-08-25 | Improvements in or relating to mine props |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL69904C true NL69904C (it) | 1952-04-13 |
Family
ID=10178300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL152144A NL69904C (it) | 1948-08-25 | 1950-03-09 |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE494657A (it) |
| FR (1) | FR1014707A (it) |
| GB (1) | GB656800A (it) |
| NL (1) | NL69904C (it) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1195704B (de) * | 1963-10-03 | 1965-07-01 | Salzgitter Maschinen Ag | Hydraulischer Grubenstempel |
| CN113685208B (zh) * | 2021-07-14 | 2022-07-22 | 东北大学 | 一种流固耦合式多级吸能防冲液压立柱及其工作方法 |
-
1948
- 1948-08-25 GB GB2237248A patent/GB656800A/en not_active Expired
-
1950
- 1950-03-09 NL NL152144A patent/NL69904C/xx active
- 1950-03-15 FR FR1014707D patent/FR1014707A/fr not_active Expired
- 1950-03-21 BE BE494657D patent/BE494657A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| BE494657A (it) | 1950-07-17 |
| FR1014707A (fr) | 1952-08-20 |
| GB656800A (en) | 1951-09-05 |