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发明名称
Connecting metal plate
摘要
申请公布号
US1872616(A)
申请公布日期
1932.08.16
申请号
US19300443068
申请日期
1930.04.10
申请人
A. O. SMITH CORPORATION
发明人
ANDREN BIRGER TORVALD
分类号
B21D39/03;F16B33/00;F16B37/06
主分类号
B21D39/03
代理机构
代理人
主权项
地址
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