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发明名称
摘要
申请公布号
JPS53155539(U)
申请公布日期
1978.12.06
申请号
JP19770060166U
申请日期
1977.05.13
申请人
发明人
分类号
B21D37/04;B21D37/16;B30B15/34;(IPC1-7):B30B15/34
主分类号
B21D37/04
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代理人
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