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发明名称
摘要
申请公布号
JPH0133234(Y2)
申请公布日期
1989.10.09
申请号
JP19810018310U
申请日期
1981.02.13
申请人
发明人
分类号
B21D28/14;B21C47/26;B21D39/03;B65H21/00;C21D1/00;C21D9/56;C21D9/68;(IPC1-7):B21D39/03
主分类号
B21D28/14
代理机构
代理人
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地址
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