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发明名称
摘要
申请公布号
JPS54148644(U)
申请公布日期
1979.10.16
申请号
JP19780044920U
申请日期
1978.04.07
申请人
发明人
分类号
B21B31/00;F16C33/04;(IPC1-7):B21B31/00
主分类号
B21B31/00
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