NL6904902A - - Google Patents
Info
- Publication number
- NL6904902A NL6904902A NL6904902A NL6904902A NL6904902A NL 6904902 A NL6904902 A NL 6904902A NL 6904902 A NL6904902 A NL 6904902A NL 6904902 A NL6904902 A NL 6904902A NL 6904902 A NL6904902 A NL 6904902A
- 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
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
- Sealing Material Composition (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19681767072 DE1767072A1 (de) | 1968-03-28 | 1968-03-28 | Verfahren zur Entsaeuerung und Aufhaertung sehr weicher Waesser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL6904902A true NL6904902A (de) | 1969-09-30 |
Family
ID=5699219
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL6904902A NL6904902A (de) | 1968-03-28 | 1969-03-28 |
Country Status (5)
| Country | Link |
|---|---|
| AT (1) | AT288980B (de) |
| CH (1) | CH505759A (de) |
| DE (1) | DE1767072A1 (de) |
| FR (1) | FR2004892A1 (de) |
| NL (1) | NL6904902A (de) |
-
1968
- 1968-03-28 DE DE19681767072 patent/DE1767072A1/de active Pending
-
1969
- 1969-02-03 AT AT107969A patent/AT288980B/de not_active IP Right Cessation
- 1969-02-06 CH CH195669A patent/CH505759A/de not_active IP Right Cessation
- 1969-03-07 FR FR6906433A patent/FR2004892A1/fr not_active Withdrawn
- 1969-03-28 NL NL6904902A patent/NL6904902A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| FR2004892A1 (en) | 1969-12-05 |
| DE1767072A1 (de) | 1971-09-02 |
| AT288980B (de) | 1971-03-25 |
| CH505759A (de) | 1971-04-15 |