HU9300003D0
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1993-06-28
Method for purifying water
GB2255087B
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1995-06-21
System for cleaning contaminated water
HU911955D0
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1991-12-30
Sewage cleaning apparatus
GB2257429B
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1994-06-22
Water filters
EP0457175A3
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1992-04-29
Method of purification of alkoxysilanes
FI951557A0
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1995-03-31
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1991-06-12
Removal of contaminants from water
GB2250281B
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1994-06-22
Water filters
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1992-03-11
Dichlorofluoropropanes based compositions for removing water from surfaces
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1995-07-31
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1990-03-14
Method of selectively removing pollutants from water
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1993-08-23
Agent for removing water from surfaces
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1992-09-02
Water purification apparatus
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1992-04-01
Process for removing phoshates from water
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1992-07-15
Method for the purification of water
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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
AU8631691A
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1992-04-15
Arrangement for purification of waste 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
GB9114928D0
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1991-08-28
An improved water filter
CS142290A3
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1992-01-15
Liquid cyclone arrangement for treating scale-containing water
AU1042683A
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1983-09-08
System for removing contaminants from water area
CS69190A2
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1991-09-15
Method of nitrates removal from water