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发明名称
摘要
申请公布号
JPH07102416(B2)
申请公布日期
1995.11.08
申请号
JP19910157474
申请日期
1991.06.03
申请人
发明人
分类号
B21D39/10;B21D41/02;B29C57/04;E21B15/02;E21B17/01;H05B6/10;(IPC1-7):B21D41/02
主分类号
B21D39/10
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代理人
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地址
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