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发明名称
摘要
申请公布号
JPH0438487(B2)
申请公布日期
1992.06.24
申请号
JP19840161295
申请日期
1984.07.31
申请人
发明人
分类号
B21C47/02;B21C47/26
主分类号
B21C47/02
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代理人
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