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发明名称
摘要
申请公布号
JPS4330048(Y1)
申请公布日期
1968.12.09
申请号
JP19660005261U
申请日期
1966.01.24
申请人
发明人
分类号
B21D11/20;B21D5/14;B21D7/08;B21D13/04;(IPC1-7):B21D7/08
主分类号
B21D11/20
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