Circumferential pipe cutting or welding machine,申请号US19310553788-传众专利搜索

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发明名称	Circumferential pipe cutting or welding machine
摘要
申请公布号	US1879346(A)	申请公布日期	1932.09.27
申请号	US19310553788	申请日期	1931.07.29
申请人	AIR REDUCTION COMPANY, INCORPORATED	发明人	LAWRENCE FRANK S.
分类号	B23K7/00	主分类号	B23K7/00
代理机构		代理人
主权项
地址

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