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发明名称
摘要
申请公布号
NL6403808(A)
申请公布日期
1965.02.17
申请号
NL19640003808
申请日期
1964.04.09
申请人
发明人
分类号
B21D22/12;B30B5/02
主分类号
B21D22/12
代理机构
代理人
主权项
地址
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