CPC Subgroup
C02F 1/02 by heating (methods of steam generation F22B; preheating boiler feed-water or accumulating preheated boiler feed-water F22D)
Full Title
Treatment of water, waste water, or sewage (C02F3/00 - C02F9/00 take precedence) > by heating (methods of steam generation F22B; preheating boiler feed-water or accumulating preheated boiler feed-water F22D)
2 direct subcodes
Child Classifications
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- C02F 1/04 by distillation or evaporation