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发明名称
摘要
申请公布号	JPH02144221(U)	申请公布日期	1990.12.06
申请号	JP19900053544U	申请日期	1990.05.24
申请人		发明人
分类号	B21D37/04;(IPC1-7):B21D37/04	主分类号	B21D37/04
代理机构		代理人
主权项
地址

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