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发明名称
摘要
申请公布号
JPS57106521(U)
申请公布日期
1982.07.01
申请号
JP19800182065U
申请日期
1980.12.17
申请人
发明人
分类号
B21D15/06;B21D5/14;B21D15/04;(IPC1-7):B21D15/04
主分类号
B21D15/06
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