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发明名称
FERROUS METAL WELDING APPARATUS
摘要
申请公布号
CA384857(A)
申请公布日期
1939.10.31
申请号
CAD384857
申请日期
申请人
BROADFIELD METALS CORPORATION
发明人
WARD HOLT BROADFIELD
分类号
主分类号
代理机构
代理人
主权项
地址
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