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发明名称
Drawing wire
摘要
申请公布号
US2074224(A)
申请公布日期
1937.03.16
申请号
US19350021295
申请日期
1935.05.13
申请人
OAKITE PRODUCTS, INC.
发明人
JOHNSON CARL
分类号
B21C9/02
主分类号
B21C9/02
代理机构
代理人
主权项
地址
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