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发明名称
摘要
申请公布号
JPS577801(B2)
申请公布日期
1982.02.13
申请号
JP19760058044
申请日期
1976.05.20
申请人
发明人
分类号
B21B1/02;B21B1/04;B21B1/16;B21B13/00;B21B13/02;B21B13/12;B21B31/02;B21B31/06;B21B35/12;B21B37/48;B21C51/00
主分类号
B21B1/02
代理机构
代理人
主权项
地址
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