Step-up switch for electric arc welding,申请号US19430487174-传众专利搜索

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发明名称	Step-up switch for electric arc welding
摘要
申请公布号	US2376827(A)	申请公布日期	1945.05.22
申请号	US19430487174	申请日期	1943.05.15
申请人	SMITH RUSSELL E	发明人	SMITH RUSSELL E.
分类号	B23K9/10	主分类号	B23K9/10
代理机构		代理人
主权项
地址

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