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发明名称
摘要
申请公布号	JPH0459965(B2)	申请公布日期	1992.09.24
申请号	JP19850262148	申请日期	1985.11.20
申请人	SUMITOMO METAL IND	发明人	NAGAI MASAYUKI
分类号	B21C3/14;B21C1/00;B21C1/22	主分类号	B21C3/14
代理机构		代理人
主权项
地址

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