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发明名称
摘要
申请公布号
LU59649(A1)
申请公布日期
1970.01.12
申请号
LUD59649
申请日期
1969.10.15
申请人
发明人
分类号
B21B1/46;B21B13/22;B22D11/12
主分类号
B21B1/46
代理机构
代理人
主权项
地址
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