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发明名称
摘要
申请公布号
JPH0785808(B2)
申请公布日期
1995.09.20
申请号
JP19910345185
申请日期
1991.12.26
申请人
发明人
分类号
B21B45/02;(IPC1-7):B21B45/02
主分类号
B21B45/02
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代理人
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