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Priority to JP47011576ApriorityCriticalpatent/JPS529190B2/ja
Publication of JPS4880458ApublicationCriticalpatent/JPS4880458A/ja
Publication of JPS529190B2publicationCriticalpatent/JPS529190B2/ja
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
