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发明名称
Method of making sheet-metal barrels or drums
摘要
申请公布号
US1748036(A)
申请公布日期
1930.02.18
申请号
US19240754271
申请日期
1924.12.06
申请人
THE DRAPER MANUFACTURING COMPANY
发明人
DRAPER CHARLES T.
分类号
B21D51/20
主分类号
B21D51/20
代理机构
代理人
主权项
地址
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