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B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
B28B21/00—Methods or machines specially adapted for the production of tubular articles
B28B21/02—Methods or machines specially adapted for the production of tubular articles by casting into moulds
B28B21/10—Methods or machines specially adapted for the production of tubular articles by casting into moulds using compacting means
B28B21/36—Methods or machines specially adapted for the production of tubular articles by casting into moulds using compacting means applying fluid pressure or vacuum to the material
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FR709361D1930-02-031931-01-14Procédé et dispositif pour la fabrication d'objets moulés en ciment hydraulique
ExpiredFR709361A
(fr)