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发明名称
摘要
申请公布号
SU361867(A1)
申请公布日期
1972.12.13
申请号
SU19711688005
申请日期
1971.08.06
申请人
发明人
分类号
B25D9/26;B21C51/00;B21J15/18;(IPC1-7):B25D9/26
主分类号
B25D9/26
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代理人
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