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B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
B21C27/00—Containers for metal to be extruded
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FR902121D1943-10-041943-10-04Perfectionnements aux conteneurs des presses à filer les métaux et autres produits, à chaud, par procédé dit d'extrusion
ExpiredFR902121A
(fr)
Procédé pour la purification des polyoléfines de basse pression, ainsi que les produits conformes à ceux obtenus par le présent procédé ou procédé similaire