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发明名称
摘要
申请公布号
JPH089073(B2)
申请公布日期
1996.01.31
申请号
JP19870076506
申请日期
1987.03.31
申请人
发明人
分类号
B21D28/12;B21D28/36;(IPC1-7):B21D28/36
主分类号
B21D28/12
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代理人
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