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发明名称
摘要
申请公布号
JPS53156948(U)
申请公布日期
1978.12.09
申请号
JP19770061386U
申请日期
1977.05.16
申请人
发明人
分类号
B21D53/06;B21D51/16;F28D7/00;F28D7/16;(IPC1-7):F28D7/00
主分类号
B21D53/06
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