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发明名称
Spinning tool
摘要
申请公布号
US2917014(A)
申请公布日期
1959.12.15
申请号
US19540471605
申请日期
1954.11.29
申请人
CALUMET AND HECLA, INC.
发明人
TERWILLIGER HENRY L.
分类号
B21D22/14
主分类号
B21D22/14
代理机构
代理人
主权项
地址
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