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C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
C02F1/00—Treatment of water, waste water, or sewage
C02F1/68—Treatment of water, waste water, or sewage by addition of specified substances, e.g. trace elements, for ameliorating potable water
C02F1/685—Devices for dosing the additives
C02F1/686—Devices for dosing liquid additives
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FR465725D1913-12-021913-12-02Perfectionnements dans les dispositifs pour ajouter des désinfectants dans des appareils de distribution d'eau
ExpiredFR465725A
(fr)