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经营范围
发明名称
Improvements in arc welding systems
摘要
申请公布号
GB401845(A)
申请公布日期
1933.11.23
申请号
GB19320024669
申请日期
1932.09.05
申请人
LAWRENCE EMIL WIDMARK
发明人
分类号
B23K9/073
主分类号
B23K9/073
代理机构
代理人
主权项
地址
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