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发明名称
WELDING APPARATUS
摘要
申请公布号
CA299145(A)
申请公布日期
1930.04.08
申请号
CAD299145
申请日期
申请人
THE METROPOLITAN ENGINEERING COMPANY
发明人
GEORGE H. PHELPS
分类号
主分类号
代理机构
代理人
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