HU9300003D0
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1993-06-28
Method for purifying water
HU911955D0
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1991-12-30
Sewage cleaning apparatus
GB2257429B
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1994-06-22
Water filters
FI945643L
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1994-11-30
Menetelmä veden poistamiseksi hienojakoisista kiintoainesuspensioista
FI951557A0
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1995-03-31
Menetelmä veden poistamiseksi partikkelimaisista kiinteistä aineista
FI945644L
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1994-11-30
Menetelmä veden poistamiseksi hienojakoisista kiintoainesuspensioista
GB2250281B
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1994-06-22
Water filters
GB9109085D0
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1991-06-12
Removal of contaminants from water
EP0450296A3
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1992-03-11
Dichlorofluoropropanes based compositions for removing water from surfaces
PL53220Y1
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1995-07-31
Układ do usuwania zanieczyszczeń stałych z wody
EP0333257A3
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1990-03-14
Method of selectively removing pollutants from water
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1991-08-23
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1995-05-03
Water purification apparatus
EP0472250A3
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1992-04-01
Process for removing phoshates from water
IL98930A0
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1992-07-15
Method for the purification of water
RU1806817C
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1993-04-07
Device for treatment of oil-containing sewage
GB8929163D0
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1990-02-28
Removing contaminants from water
GB8319274D0
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1983-08-17
Removing water from oil
GB9411862D0
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1994-08-03
Removal of organic matter from water
PL286470A1
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1992-02-24
Method and system of removing stable pollutants from water
HU205022B
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1992-03-30
Settling apparatus particularly for purifying water or sewage
CS142290A3
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1992-01-15
Liquid cyclone arrangement for treating scale-containing water
CS69190A2
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1991-09-15
Method of nitrates removal from water
PHUM7439Z
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1992-11-05
An improved ecological filter for water
PL301978A1
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1995-07-24
Method of removing excess of water from flotation wastes