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发明名称
摘要
申请公布号
JPS56100300(U)
申请公布日期
1981.08.07
申请号
JP19790180991U
申请日期
1979.12.25
申请人
发明人
分类号
B21D37/04;B30B15/28;F15B11/06;(IPC1-7):B30B15/28
主分类号
B21D37/04
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代理人
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