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经营范围
发明名称
Wire drawing mechanism
摘要
申请公布号
US2257644(A)
申请公布日期
1941.09.30
申请号
US19380235730
申请日期
1938.10.19
申请人
NATIONAL STANDARD COMPANY
发明人
PIERCE ROBERT C.
分类号
B21C3/14
主分类号
B21C3/14
代理机构
代理人
主权项
地址
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