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F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
F04D—NON-POSITIVE-DISPLACEMENT PUMPS
F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
F04D1/12—Pumps with scoops or like paring members protruding in the fluid circulating in a bowl
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FR838461D1938-05-271938-05-27Appareil pour déplacer les liquides, gaz et vapeurs, susceptible d'opérer des émulsions ou des mélanges intimes
ExpiredFR838461A
(fr)