C
CHEMISTRY; METALLURGY
C
CHEMISTRY; METALLURGY
C02
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
C02
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
C02F
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
C02F
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
1/00
Treatment of water, waste water, or sewage
1/00
Treatment of water, waste water, or sewage
C02F1/008
Control or steering systems not provided for elsewhere in subclass C02F
C02F1/008
Control or steering systems not provided for elsewhere in subclass C02F