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发明名称
摘要
申请公布号
JPS4990643(U)
申请公布日期
1974.08.06
申请号
JP19720139074U
申请日期
1972.12.02
申请人
发明人
分类号
B21G5/00;B21G3/00;F16B15/02;(IPC1-7):F16B15/02
主分类号
B21G5/00
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