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发明名称
摘要
申请公布号
JP2506768(Y2)
申请公布日期
1996.08.14
申请号
JP19900057892U
申请日期
1990.05.31
申请人
发明人
分类号
B21D28/34;B21J5/10;B21J13/02;(IPC1-7):B21D28/34
主分类号
B21D28/34
代理机构
代理人
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地址
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