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发明名称
Method of making a spring hanger
摘要
申请公布号
US1872319(A)
申请公布日期
1932.08.16
申请号
US19300449903
申请日期
1930.05.05
申请人
A. O. SMITH CORPORATION
发明人
MILLER HENRY
分类号
B21D53/00;E06B9/18
主分类号
B21D53/00
代理机构
代理人
主权项
地址
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