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发明名称
摘要
申请公布号
JPH0698423(B2)
申请公布日期
1994.12.07
申请号
JP19900149822
申请日期
1990.06.11
申请人
发明人
分类号
B21F11/00;(IPC1-7):B21F11/00
主分类号
B21F11/00
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代理人
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地址
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