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发明名称
摘要
申请公布号
JPS5315796(Y2)
申请公布日期
1978.04.25
申请号
JP19750035922U
申请日期
1975.03.19
申请人
发明人
分类号
B21C37/08;(IPC1-7):B21C37/08
主分类号
B21C37/08
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代理人
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地址
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