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Priority to JP1990404694UpriorityCriticalpatent/JPH0543935Y2/ja
Publication of JPH0447816UpublicationCriticalpatent/JPH0447816U/ja
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Publication of JPH0543935Y2publicationCriticalpatent/JPH0543935Y2/ja
B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
B21D11/00—Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00; Twisting