NL54039C - - Google Patents
Info
- Publication number
- NL54039C NL54039C NL54039DA NL54039C NL 54039 C NL54039 C NL 54039C NL 54039D A NL54039D A NL 54039DA NL 54039 C NL54039 C NL 54039C
- Authority
- NL
- Netherlands
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1205—Particular type of activated sludge processes
- C02F3/1215—Combinations of activated sludge treatment with precipitation, flocculation, coagulation and separation of phosphates
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F21/00—Variable inductances or transformers of the signal type
- H01F21/005—Inductances without magnetic core
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P7/00—Resonators of the waveguide type
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P7/00—Resonators of the waveguide type
- H01P7/02—Lecher resonators
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Power Engineering (AREA)
- Analytical Chemistry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE207145X | 1937-10-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL54039C true NL54039C (de) |
Family
ID=5793549
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL54039D NL54039C (de) | 1937-10-19 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US2248782A (de) |
| BE (1) | BE430631A (de) |
| CH (1) | CH207145A (de) |
| FR (1) | FR844609A (de) |
| NL (1) | NL54039C (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2442615A (en) * | 1940-04-25 | 1948-06-01 | Electrical & Musical Ind Ltd | High-frequency tuner |
-
0
- NL NL54039D patent/NL54039C/xx active
- BE BE430631D patent/BE430631A/xx unknown
-
1938
- 1938-10-03 CH CH207145D patent/CH207145A/de unknown
- 1938-10-08 US US23392438 patent/US2248782A/en not_active Expired - Lifetime
- 1938-10-11 FR FR844609D patent/FR844609A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR844609A (fr) | 1939-07-28 |
| US2248782A (en) | 1941-07-08 |
| CH207145A (de) | 1939-09-30 |
| BE430631A (de) |