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发明名称
摘要
申请公布号
JPS57152311(U)
申请公布日期
1982.09.24
申请号
JP19810037617U
申请日期
1981.03.19
申请人
发明人
分类号
B21C1/14;B21C1/02;(IPC1-7):B21C1/02
主分类号
B21C1/14
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