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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
C02F1/02—Treatment of water, waste water, or sewage by heating
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Water Supply & Treatment
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FR676032D1928-06-021929-06-01Procédé pour stériliser et purifier les eaux alimentaires affectées particulièrement aux usages ménagers
ExpiredFR676032A
(fr)