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B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
B28B3/20—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein the material is extruded
B28B3/22—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein the material is extruded by screw or worm
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FR552398D1921-12-101922-05-31Perfectionnement aux appareils propulseurs à hélices pour le traitement de l'argile et autres matières
ExpiredFR552398A
(fr)