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发明名称
摘要
申请公布号
SU416238(A1)
申请公布日期
1974.02.25
申请号
SU19721739191
申请日期
1972.01.21
申请人
发明人
分类号
B26D3/16;B23D21/04;(IPC1-7):B26D3/16
主分类号
B26D3/16
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