PRODUCTION OF UNEQUAL-THICKNESS SEAMLESS STEEL PIPE,申请号JP19910303712-传众专利搜索

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发明名称	PRODUCTION OF UNEQUAL-THICKNESS SEAMLESS STEEL PIPE
摘要
申请公布号	JPH05138209(A)	申请公布日期	1993.06.01
申请号	JP19910303712	申请日期	1991.11.20
申请人	NKK CORP	发明人	IKUI KENJI;ODA TATSUHARU
分类号	B21B17/02	主分类号	B21B17/02
代理机构		代理人
主权项
地址

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