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发明名称
Improvements in welding rods
摘要
申请公布号
GB498479(A)
申请公布日期
1939.01.09
申请号
GB19370018825
申请日期
1937.07.07
申请人
ELECTRO METALLURGICAL COMPANY
发明人
分类号
B23K35/30
主分类号
B23K35/30
代理机构
代理人
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地址
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