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PCE
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CPC Subgroup
C02F 1/20

by degassing, i.e. liberation of dissolved gases (degasification of liquids in general B01D19/00; arrangement of degassing apparatus in boiler feed supply F22D)

Full Title

Treatment of water, waste water, or sewage (C02F3/00 - C02F9/00 take precedence) > by degassing, i.e. liberation of dissolved gases (degasification of liquids in general B01D19/00; arrangement of degassing apparatus in boiler feed supply F22D)