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发明名称
摘要
申请公布号
SE311623(B)
申请公布日期
1969.06.23
申请号
SE19630001956
申请日期
1963.02.22
申请人
ROPER R
发明人
ROPER R
分类号
B21D22/02;B21D22/06;B21D51/00;(IPC1-7):B21D53/88
主分类号
B21D22/02
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