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HENRI JACQUES WESSELS DE FRISE
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HENRI JACQUES WESSELS DE FRISE
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Application filed by HENRI JACQUES WESSELS DE FRISEfiledCriticalHENRI JACQUES WESSELS DE FRISE
Application grantedgrantedCritical
Publication of FR344674ApublicationCriticalpatent/FR344674A/en
Apparatus for the treatment of liquids with gases according to the counter-current principle, more specifically applicable to the sterilization of water by means of ozone