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经营范围
发明名称
Improvements in electrodes for arc welding
摘要
申请公布号
GB420474(A)
申请公布日期
1934.12.03
申请号
GB19340006132
申请日期
1934.02.24
申请人
ROBERT SARAZIN
发明人
分类号
B23K35/02;B23K35/04
主分类号
B23K35/02
代理机构
代理人
主权项
地址
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