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发明名称
摘要
申请公布号
JPS5536416(B2)
申请公布日期
1980.09.20
申请号
JP19780029833
申请日期
1978.03.17
申请人
发明人
分类号
B21J1/02;B21J5/06;B21K1/10;B21K21/06
主分类号
B21J1/02
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代理人
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