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发明名称
摘要
申请公布号
JPS4854378(U)
申请公布日期
1973.07.13
申请号
JP19710096814U
申请日期
1971.10.21
申请人
发明人
分类号
B21D45/04;B30B15/30;(IPC1-7):B21D45/04
主分类号
B21D45/04
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