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发明名称
摘要
申请公布号
JPH0761498(B2)
申请公布日期
1995.07.05
申请号
JP19890035646
申请日期
1989.02.15
申请人
发明人
分类号
B21C35/03;B21D3/12;(IPC1-7):B21C35/03
主分类号
B21C35/03
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代理人
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