DIFF Subgroup
C02F 11/02 Biological treatment
Introduced: January 1980
Full Title
Treatment of sludge; Devices therefor > Biological treatment
IPC and CPC are identically structured here. All 1 subcodes exist in both systems.
IPC defines codes here since 1980.
Child Classifications
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- C02F 11/04 Anaerobic treatment; Production of methane by such processes since 1980 IPC+CPC Available in IPC and CPC