METHOD AND DEVICE FOR WELDING INNER DIAPHRAGM OF STEEL PIPE,申请号JP19870209308-传众专利搜索

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发明名称	METHOD AND DEVICE FOR WELDING INNER DIAPHRAGM OF STEEL PIPE
摘要
申请公布号	JPS6453778(A)	申请公布日期	1989.03.01
申请号	JP19870209308	申请日期	1987.08.25
申请人	NAKAJIMA KOKAN KK	发明人	NAKAJIMA SHIN
分类号	B23K9/00	主分类号	B23K9/00
代理机构		代理人
主权项
地址

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