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发明名称
摘要
申请公布号
SU363544(A1)
申请公布日期
1972.12.25
申请号
SU19701459034
申请日期
1970.07.10
申请人
发明人
分类号
B21J13/02;(IPC1-7):B21J13/02
主分类号
B21J13/02
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代理人
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地址
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