Improvements relating to the electrical butt-welding of metallic objects,申请号GB19480002681-传众专利搜索

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发明名称	Improvements relating to the electrical butt-welding of metallic objects
摘要
申请公布号	GB640591(A)	申请公布日期	1950.07.26
申请号	GB19480002681	申请日期	1948.01.29
申请人	ROGER OLOF SMITH	发明人
分类号	B23K35/02	主分类号	B23K35/02
代理机构		代理人
主权项
地址

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