BE448520A - - Google Patents
Info
- Publication number
- BE448520A BE448520A BE448520DA BE448520A BE 448520 A BE448520 A BE 448520A BE 448520D A BE448520D A BE 448520DA BE 448520 A BE448520 A BE 448520A
- Authority
- BE
- Belgium
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F7/00—Compounds of aluminium
- C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
- C01F7/16—Preparation of alkaline-earth metal aluminates or magnesium aluminates; Aluminium oxide or hydroxide therefrom
- C01F7/164—Calcium aluminates
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H51/00—Electromagnetic relays
- H01H51/30—Electromagnetic relays specially adapted for actuation by AC
- H01H51/32—Frequency relays; Mechanically-tuned relays
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Manufacture And Refinement Of Metals (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEK510D DE906218C (de) | 1942-01-03 | 1942-01-03 | Verfahren zur Gewinnung von Tonerde |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE448520A true BE448520A (mo) |
Family
ID=7208496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE448520D BE448520A (mo) | 1942-01-03 |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE448520A (mo) |
| DE (1) | DE906218C (mo) |
| FR (1) | FR976376A (mo) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3507635A1 (de) * | 1985-03-05 | 1986-09-11 | Ruhrgas Ag, 4300 Essen | Verfahren zum herstellen von kohlegas |
-
0
- BE BE448520D patent/BE448520A/xx unknown
-
1942
- 1942-01-03 DE DEK510D patent/DE906218C/de not_active Expired
-
1948
- 1948-12-10 FR FR976376D patent/FR976376A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR976376A (fr) | 1951-03-16 |
| DE906218C (de) | 1954-03-11 |