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经营范围
发明名称
Rod or wire drawing block
摘要
申请公布号
US1756206(A)
申请公布日期
1930.04.29
申请号
US19240744895
申请日期
1924.10.21
申请人
NULLMEYER FRANK H
发明人
NULLMEYER FRANK H.
分类号
B21C1/14
主分类号
B21C1/14
代理机构
代理人
主权项
地址
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