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发明名称
摘要
申请公布号
JPH089071(B2)
申请公布日期
1996.01.31
申请号
JP19870057056
申请日期
1987.03.12
申请人
发明人
分类号
B21D28/02;B21D28/14;(IPC1-7):B21D28/02
主分类号
B21D28/02
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