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B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
B21C25/00—Profiling tools for metal extruding
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FR1113713D1954-11-241954-11-24
Process for the extrusion of hollow parts, and machine for carrying out this process and similar processes
ExpiredFR1113713A
(en)