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发明名称
摘要
申请公布号
JPS6220735(U)
申请公布日期
1987.02.07
申请号
JP19850112676U
申请日期
1985.07.23
申请人
发明人
分类号
B21D53/30;(IPC1-7):B21D53/30
主分类号
B21D53/30
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代理人
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地址
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